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| Patents for James H. Layman | |||||
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| Number | Date | Patentee | Title | Type | |
| 604,265 | May 17, 1898 | J. Powell | Lubricator | oil pumps | |
| 614,967 | Nov. 29, 1898 | J. Mills | Crank Planer and Metal Shaper | metal shapers | |