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| Patents for Jos. Geo. Mason | |||||
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| Number | Date | Patentee | Title | Type | |
| 13,127 | Jun. 26, 1855 | C.J. Ackerman, J.S. Halstead | Try Square and Bevel | squares | |
| 14,396 | Mar. 11, 1856 | R. Eickemeyer | Improvement in Parallel Rulers | rules | |