Patent
   D591778
Priority
Apr 29 2005
Filed
Aug 30 2007
Issued
May 05 2009
Expiry
May 05 2023
Assg.orig
Entity
unknown
8
26
n/a
The ornamental design for the refractory block, as shown as described.

FIG. 1 is a front, perspective view of a refractory block showing our new design;

FIG. 2 is a back, perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof, the left side being a mirror image thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a back view thereof; and,

FIG. 7 is a bottom view thereof, the separation and bracket shown in FIGS. 1, 2, 4, 5 and 7 indicating that the depth of the refractory block from the front face may vary.

Stephansky, John J., Berry, John E.

Patent Priority Assignee Title
10934705, Nov 20 2018 MAX-BLOCK DEVELOPMENT L L C Wall construction members and system
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 25 2005BERRY, JOHN E Harbison-Walker Refractories CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0636820932 pdf
Apr 25 2005STEPHANSKY, JOHN J Harbison-Walker Refractories CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0636820932 pdf
Aug 30 2007Harbison-Walker Refractories Company(assignment on the face of the patent)
Dec 23 2015Harbison-Walker Refractories CompanyAPGI, LLCMERGER SEE DOCUMENT FOR DETAILS 0636830631 pdf
Dec 30 2015A P GREEN REFRACTORIES, INC HARBISONWALKER INTERNATIONAL, INC CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0636920624 pdf
Dec 31 2015APGI, LLCA P GREEN REFRACTORIES, INC MERGER SEE DOCUMENT FOR DETAILS 0636830767 pdf
May 24 2023HARBISONWALKER INTERNATIONAL, INC THE BANK OF NEW YORK MELLON TRUST COMPANY, N A NOTES PATENT SECURITY AGREEMENT0637840481 pdf
May 24 2023HARBISONWALKER INTERNATIONAL, INC BNP PARIBASBNPP PATENT SECURITY AGREEMENT0637840283 pdf
May 24 2023HARBISONWALKER INTERNATIONAL HOLDINGS, INC BNP PARIBASBNPP PATENT SECURITY AGREEMENT0637840283 pdf
May 24 2023HARBISONWALKER INTERNATIONAL MINERALS, INC JPMORGAN CHASE BANK, N A SECURITY AGREEMENT0637830851 pdf
May 24 2023HARBISONWALKER INTERNATIONAL HOLDINGS, INC JPMORGAN CHASE BANK, N A SECURITY AGREEMENT0637830851 pdf
May 24 2023HARBISONWALKER INTERNATIONAL MINERALS, INC BNP PARIBASBNPP PATENT SECURITY AGREEMENT0637840283 pdf
May 24 2023HARBISONWALKER INTERNATIONAL MINERALS, INC THE BANK OF NEW YORK MELLON TRUST COMPANY, N A NOTES PATENT SECURITY AGREEMENT0637840481 pdf
May 24 2023HARBISONWALKER INTERNATIONAL HOLDINGS, INC THE BANK OF NEW YORK MELLON TRUST COMPANY, N A NOTES PATENT SECURITY AGREEMENT0637840481 pdf
May 24 2023HARBISONWALKER INTERNATIONAL, INC JPMORGAN CHASE BANK, N A SECURITY AGREEMENT0637830851 pdf
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