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| Patents for P. A. Whitney | |||||
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| Number | Date | Patentee | Title | Type | |
| 74,870 | Feb. 25, 1868 | P.A. Whitney | Drill and Countersink | metalworking countersinks | |
| 83,347 | Oct. 20, 1868 | P.A. Whitney, A.W. Whitney | Machine for Bending and Folding Sheet Metal | sheet metal | |
| 83,348 | Oct. 20, 1868 | P.A. Whitney | Improvement in counter-sink | countersinks | |