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| Patents for J. W. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 65,347 | Jun. 04, 1867 | J.W. Clark | Improvement in guards for circular saws | woodworking machine safety guards | |
| 86,605 | Feb. 02, 1869 | I.P. Tice | Improvement in molding-machines | wood shapers | |
| 393,341 | Nov. 20, 1888 | H. O'Hare | Calf Weaner | animal weaners | |