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| Patents for Alexander Watson | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,927 | Dec. 04, 1849 | A. Stiven | Improvement in pumps for raising water | rotary pumps | |
| 403,627 | May 21, 1889 | A. Watson | Adjustable work-rest for benches | work holding | |
| 441,522 | Nov. 25, 1890 | A. Watson | Threshold Gage | special purpose gauges | |