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| Patents for Charles C. Pierce | |||||
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| Picture | Number | Date | Patentee | Title | |
| 671,177 | Apr. 02, 1901 | J.V. Beekman | Derrick-engine | ||
| 710,954 | Oct. 14, 1902 | H.N. Covell | Drum-reversing device for winding-engines | ||
| 718,916 | Jan. 20, 1903 | H.N. Covell | Combined brake and friction operating mechanism | ||
| 802,844 | Oct. 24, 1905 | C.A. Baechtold, H.N. Covell | Reversible driving device | ||
| 816,640 | Apr. 03, 1906 | J. Butler | Logging apparatus | ||