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| Patents for Fray & Pigg | |||||
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| Number | Date | Patentee | Title | Type | |
| 25,984 | Nov. 01, 1859 | N. Spofford | Bit-stock with clam-style chuck | brace chucks | |
| 89,925 | May 11, 1869 | J.S. Fray | Improvement in attachment to boring-brace | braces | |