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| Patents for John J. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 363,351 | May 24, 1887 | H.A. Ainsworth | Drop-hammer | drop hammers | |
| RE11,307 | Feb. 07, 1893 | C.L. Grimes | Hydrostatic tire-setter | tire setters | |
| 537,534 | Apr. 16, 1895 | C.F. Hunt | Clutch and stop | punch presses | |