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16,536 · Ewen · "Combining Prism Pavement and Prism Plate Placed Midway between the Sections thereof for Lighting Basements" · Drawing Home > Prism Glass > Patent Index > Drawing |
16,536: 3 of 3 |
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Drawings: 419 of 667 |
A.D. 1897. July 13. Nº 16,536. EWEN'S COMPLETE SPECIFICATION.
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