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| Patents for Samuel H. Markham | |||||
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| Number | Date | Patentee | Title | Type | |
| 542,367 | Jul. 09, 1895 | S.H. Markham | Inside Bevel | bevel squares | |
| 561,802 | Jun. 09, 1896 | S.H. Markham | Micrometer Calipers | micrometers | |