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| Patents for Charles H. Alapaw | |||||
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| Number | Date | Patentee | Title | Type | |
| 311,800 | Feb. 03, 1885 | C.H. Alapaw | Calipers | calipers | |
| 341,986 | May 18, 1886 | C.H. Alapaw | Ratchet-Socket Wrench | ratchet wrenches | |