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| Patents for John Welch | |||||
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| Number | Date | Patentee | Title | Type | |
| RE317 | Jul. 10, 1855 | G. Westinghouse, Sr. | Improvement in endless-chain horse-powers | animal powered apparatus | |
| 312,548 | Feb. 17, 1885 | J.W. Atkinson | L-Shaped Level | levels | |