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The ornamental design for a glass building block, as shown and described. |
FIG. 1 is a front perspective view of a glass building block showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is an elevational view thereof taken from the bottom of FIG. 5;
FIG. 4 is an elevational view thereof taken from the left of FIG. 5;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 2.
Patent | Priority | Assignee | Title |
D340774, | Nov 05 1991 | J. Weck GmbH u. Co. | Glassblock |
D362310, | Apr 08 1994 | Pittsburgh Corning Corporation | Glass block |
D472649, | Apr 06 2001 | CERAMGRES S R L | Glass listel for indoor decoration |
Patent | Priority | Assignee | Title |
4636413, | Dec 18 1984 | Westerwald AG fur Silikatindustrie | Corner glass block |
4651486, | May 31 1985 | Pittsburgh Corning Corporation | Translucent block for wall and column structures |
114086, |
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