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| Patents for William T. Elmer | |||||
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| Number | Date | Patentee | Title | Type | |
| 64,292 | Apr. 30, 1867 | J.W. Douglas | Improvement in hose-couplings | household hand pumps | |
| 68,781 | Sep. 10, 1867 | H.S. North | Improved snap-hook | ||