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| All Patents in class 106/284 | |||||
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| Number | Date | Patentee | Title | Type | |
| 40,650 | Nov. 17, 1863 | I. Straub, A. Straub | Improved artificial variegated marble | ||
| 40,651 | Nov. 17, 1863 | I. Straub, A. Straub | Improved asphaltic paving or flag stone | ||