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| Patents for Elias M. Watson | |||||
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| Number | Date | Patentee | Title | Type | |
| 333,577 | Jan. 05, 1886 | E.M. Watson | Pipe Lifting Machine | industrial elevators and lifts | |
| 457,064 | Aug. 04, 1891 | E.M. Watson | Pipe Wrench | pipe tongs | |
| 460,256 | Sep. 29, 1891 | J.F. Steward | Handle for rotary tools | screwdriver handles | |