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| Patents for C. H. Crawford | |||||
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| Number | Date | Patentee | Title | Type | |
| 589,038 | Aug. 31, 1897 | J.K. Sheffy | Pipe Wrench | chain and strap wrenches | |
| CA-57,603 | Sep. 28, 1897 | J.K. Sheffy | Pipe Wrench | chain and strap wrenches | |
| D28,229 | Feb. 01, 1898 | J. MacPhail | Handle For Wrenches | wrench handle components | |