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| Patents for Peter Hay | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,897 | Jan. 31, 1845 | A.A. Wilder | Machine for drilling and mortising wood or metal | drilling and boring | |
| CA-808 | Mar. 02, 1871 | P. Hay | Improvement upon solid shaft coupling | industrial machine shaft couplings | |