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| Patents for F. R. Crocker | |||||
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| Number | Date | Patentee | Title | Type | |
| 627,292 | Jun. 20, 1899 | C.T. Brant | Jar or Can Opener | jar wrenches | |
| 629,982 | Aug. 01, 1899 | C.T. Brant | Screw Cap For Cans, Tanks, etc. | jar wrenches | |