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An ornamental design for a glass block, as shown. |
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FIG. 1 is a front view of the glass block;
FIG. 2 is a left side view of the glass block;
FIG. 3 is a right side view of the glass block;
FIG. 4 is a top plan view of the glass block; and
FIG. 5 is a bottom plan view of the glass block;
FIG. 6 is a front cross-sectional view of the glass block taken along lines VI--VI of FIG. 3 illustrating undulations upon the inner surface of the glass block, giving the glass block an undulating appearance; and,
FIG. 7 is a right side cross-sectional view of the glass block taken along lines VII--VII of FIG. 1 illustrating undulations upon the inner surface of the glass block, giving the glass block an undulating appearance.
Hock, Donald E., Fleming, Harry A., Harrison, Ralph J.
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| 3017724, | |||
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Apr 08 1994 | Pittsburgh Corning Corporation | (assignment on the face of the patent) | / | |||
| Apr 12 1994 | FLEMING, HARRY A | Pittsburgh Corning Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007038 | /0272 | |
| Apr 12 1994 | HARRISON, RALPH J | Pittsburgh Corning Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007038 | /0272 | |
| Apr 12 1994 | HOCK, DONALD E | Pittsburgh Corning Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007038 | /0272 |
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