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| Patents for John P. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 91,900 | Jun. 29, 1869 | J.M. Blackstock | Improvement in scroll-sawing machine | scrollsaws | |
| 623,793 | Apr. 25, 1899 | W. Larson | Tire Bolt Wrench | tire bolt wrenches | |
| CA-63,152 | May 27, 1899 | O.J. Davidson, W. Larson | Tire Bolt Wrench | tire bolt wrenches | |