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The ornamental design for a building block, as shown. |
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FIG. 1 is an isometric view of a building block according to the invention;
FIG. 2 is a side elevation of a building block according to the invention;
FIG. 3 is a top plan view of a building block according to the invention;
FIG. 4 is an end elevation of a building block viewed from the left of FIG. 2 according to the invention; and
FIG. 5 is an end elevation of a building block viewed from the right of FIG. 2 according to the invention.
Rassias, John N., Clark, Cecily M.
| Patent | Priority | Assignee | Title |
| D342580, | Aug 27 1992 | CSTW, Inc. | Retaining wall block |
| D558329, | Sep 11 2006 | Saint-Gobain Ceramics & Plastics, Inc. | Beam support block |
| Patent | Priority | Assignee | Title |
| 159255, | |||
| 164625, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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