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206,332 · Hyatt · "Improvement in the Application of Cements, Clays, Metals and Glass in forming Illuminated or Other Gratings, Vault-Covers, Roofs, &c."· Drawing 6 Home > Prism Glass > Patent Index > Drawing 6 |
206,332: 14 of 14 |
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Drawings: 122 of 667 |
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