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Patent
D578870
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Priority
Feb 18 2008
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Filed
Feb 18 2008
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Issued
Oct 21 2008
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Expiry
Oct 21 2022
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Assg.orig
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Entity
unknown
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28
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21
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n/a
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The ornamental design for a grade chair, as shown and described.
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The grade chair is used to support rebar in concrete construction.
FIG. 1 is an upper perspective view of the grade chair showing my design.
FIG. 2 is a front view thereof, a back view being a mirror image thereof;
FIG. 3 is a side view thereof, an opposite side view being a mirror image thereof;
FIG. 4 is a top plan view thereof; and,
FIG. 5 is a bottom view thereof.
Sorkin, Felix L.
| Patent |
Priority |
Assignee |
Title |
| 11280430, |
Jul 12 2018 |
DuraPlas, LP |
Pipe support |
| 11578818, |
Jul 12 2018 |
DuraPlas, LP |
Pipe support |
| 8833301, |
Apr 02 2012 |
Classic Brands, LLC |
Bird feeder with rotating perch |
| 8833302, |
Apr 02 2012 |
Classic Brands, LLC |
Bird feeder with rotating perch |
| 8978586, |
May 23 2012 |
Classic Brands, LLC |
Wild bird feed dispenser with squirrel-resistant mechanism |
| D618988, |
Dec 11 2006 |
|
Rebar chair with depth gauge |
| D669346, |
Jul 08 2009 |
SMCP ApS |
Pipe and hose clamp |
| D672921, |
Apr 19 2011 |
Classic Brands, LLC |
Seed allocator for a wild bird feeder |
| D706608, |
Aug 22 2012 |
OFFERMAN, KARL |
Rebar chair |
| D719817, |
Sep 21 2012 |
|
Chair |
| D721262, |
Jun 25 2013 |
BIP COMPANY, LLC |
Concrete reinforcement retaining chair |
| D732928, |
Dec 19 2012 |
MEADOWBURKE, LLC |
Bolster for supporting rebar |
| D733529, |
Dec 19 2012 |
MEADOWBURKE, LLC |
Rebar bolster |
| D736599, |
Dec 04 2014 |
Allway Tools, Inc |
Supporting device for painting |
| D738194, |
Oct 25 2013 |
CONCRETE COUNTERTOP SOLUTIONS, INC |
Reinforcement support member |
| D738195, |
Sep 21 2012 |
|
Chair |
| D751369, |
Oct 25 2013 |
CONCRETE COUNTERTOP SOLUTIONS, INC. |
Reinforcement support member |
| D791579, |
Sep 08 2015 |
|
Chair |
| D838576, |
Jan 19 2018 |
OCM, Inc. |
Stackable rebar chair extension |
| D869935, |
Jul 24 2018 |
|
Stand |
| D889940, |
Apr 02 2019 |
Inland Concrete Products, Inc. |
Support chair for poured concrete reinforcement members |
| D889943, |
Jan 10 2019 |
DuraPlas, LP |
Pipe support |
| D932285, |
Apr 02 2019 |
Inland Concrete Products, Inc. |
Support chair for poured concrete reinforcement members |
| D941122, |
Jul 11 2019 |
DuraPlas, LP |
Pipe support |
| D948993, |
Apr 02 2019 |
Inland Concrete Products, Inc. |
Support chair for poured concrete reinforcement members |
| D968196, |
Oct 13 2020 |
REBAR SUPPORT PRODUCTS, INC. |
Rebar support |
| D968199, |
Apr 23 2019 |
Dayton Superior Corporation; BANK OF AMERICA, N A , AS AGENT |
Tie standoff |
| D984873, |
Sep 08 2021 |
OCM, Inc. |
Rebar chair |
| Patent |
Priority |
Assignee |
Title |
| 3387423, |
|
|
|
| 3693310, |
|
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| 4060954, |
Nov 03 1972 |
|
Bar chair for reinforcing rods |
| 4498270, |
Apr 12 1982 |
FOSROC, INC |
Support for positioning reinforcing rods or mesh in concrete or the like |
| 4682461, |
Mar 31 1986 |
SIZEMORE, BILLY G |
Support for reinforcing bar |
| 4835933, |
Feb 11 1988 |
|
Rebar spacer assembly |
| 5107654, |
Oct 07 1988 |
|
Foundation reinforcement chairs |
| 5729949, |
Sep 09 1996 |
DAYTON SUPERIOR CORPORATION A DELAWARE CORPORATION |
Slab on grade chair |
| 20040098942, |
|
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| 240708, |
|
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| D271846, |
Mar 09 1981 |
|
Support for concrete reinforcement bar |
| D271847, |
May 18 1981 |
|
Concrete reinforcement bar support |
| D279352, |
Jun 19 1984 |
ROYPAC INVESTMENTS LTD , SUITE 500-1195 WEST BROADWAY, VANCOUVER, BRITISH COLUMBIA |
Concrete reinforcing rod spacer |
| D324643, |
Nov 27 1989 |
PROMOTIONAL CONTAINERS, INC |
Rebar and beam highchair |
| D334133, |
Sep 14 1987 |
UNION BANK OF CALIFORNIA, N A |
Support for metal reinforcements in poured concrete |
| D394200, |
May 07 1996 |
DAYTON SUPERIOR CORPORATION A DELAWARE CORPORATION |
Slab on grade chair |
| D421709, |
Oct 02 1998 |
DAYTON SUPERIOR CORPORATION A DELAWARE CORPORATION |
Tower chair |
| D480291, |
Jul 16 2002 |
|
Paving chair |
| D482262, |
Sep 25 2002 |
|
Paving chair |
| D491443, |
Sep 11 2003 |
JOHN L LOWERY & ASSOCIATES, INC , D B A LOTEL |
Reinforcing wire mesh support |
| D500243, |
Jan 15 2004 |
TUREK, JAMES N II; TUREK, BRANDON D |
Rebar, beam and mesh highchair |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 30 2019 | INDEPENDENT BANKERS CAPITAL FUND III, L P | SORKIN, FELIX | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | DIAMOND STATE VENTURES III LP | SORKIN, FELIX | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | INDEPENDENT BANKERS CAPITAL FUND III, L P | GENERAL TECHNOLOGIES, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | DIAMOND STATE VENTURES III LP | GENERAL TECHNOLOGIES, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | INDEPENDENT BANKERS CAPITAL FUND III, L P | GTI HOLDINGS, LLC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | DIAMOND STATE VENTURES III LP | GTI HOLDINGS, LLC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | INDEPENDENT BANKERS CAPITAL FUND III, L P | PRECISION-HAYES INTERNATIONAL, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Aug 30 2019 | DIAMOND STATE VENTURES III LP | PRECISION-HAYES INTERNATIONAL, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 050274 | /0190 |
pdf |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a