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| Patents for William H. Clifford | |||||
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| Number | Date | Patentee | Title | Type | |
| 52,155 | Jan. 23, 1866 | E.P. Furlong | Improvement in Wrenches | wrench jaw components | |
| 52,174 | Jan. 23, 1866 | A. Parsons, C.F. Kimball | Improvement in Bits for Boring Holes | countersinks | |
| 54,040 | Apr. 17, 1866 | T. Symonds | Double-Jawed Wrench | wrench jaw components | |
| 67,682 | Aug. 13, 1867 | J.W. Strange | Improved Insertible Saw-Tooth | saw teeth | |
| 77,219 | Apr. 28, 1868 | S.C. Rundlett | Improvement in braces for bits | brace chucks | |