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Patent
D843825
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Priority
Jul 20 2017
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Filed
Jul 20 2017
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Issued
Mar 26 2019
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Expiry
Mar 26 2034
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Assg.orig
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Entity
unknown
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6
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21
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n/a
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The ornamental design for an expansion screw, as shown and described.
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FIG. 1 is a perspective view of an expansion screw showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawings illustrate portions of the expansion screw and form no part of the claimed design.
Wang, Rick
Patent |
Priority |
Assignee |
Title |
11618092, |
Jan 27 2020 |
|
Bottoming tap and chaser and method of use |
D943406, |
Oct 04 2019 |
|
Tap |
D944634, |
Jun 03 2019 |
WEST GEN TECHNOLOGIES, L L C |
Fixation device |
D947660, |
Jul 31 2019 |
MASTERPIECE HARDWARE INDUSTRIAL CO., LTD.; I-Fang, Wang |
Expansion anchor bolt |
D957927, |
Aug 08 2019 |
MASTERPIECE HARDWARE INDUSTRIAL CO., LTD.; I-Fang, Wang |
Screw anchor |
ER5627, |
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Patent |
Priority |
Assignee |
Title |
3174387, |
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3316796, |
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3385156, |
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3888156, |
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4269106, |
Mar 06 1978 |
HILTI AKTIENGESELLSCHAFT, |
Dowel for a hollow wall structure |
4986710, |
May 07 1990 |
EMHART INC A CORP OF DELAWARE |
Screw anchor |
7517182, |
Apr 11 2003 |
Illinois Tool Works Inc |
Screw anchor |
20030002951, |
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20030053881, |
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213589, |
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D297708, |
Oct 15 1985 |
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Expandable fastener for hollow walls, cement blocks or the like |
D413059, |
Mar 05 1998 |
|
Threaded fastener with serrated head |
D536956, |
Apr 27 2005 |
Joker Industrial Co., Ltd. |
Metal body for an expansion bolt |
D557409, |
May 28 2004 |
ResMed Pty Ltd |
Plug |
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a