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| All Patents in class 74/546 | |||||
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| Number | Date | Patentee | Title | Type | |
| 587,232 | Jul. 27, 1897 | H.H. Quinby | Ratchet-brace | ratchet braces | |
| 1,356,776 | Oct. 26, 1920 | J.E. Meed | Ratchet bit-brace | ratchet braces | |