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| Patents for John Clark | |||||
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| Picture | Number | Date | Patentee | Title | |
| 455X | May 19, 1803 | J. Clark | Machine for pumping | ||
| 472X | Jul. 20, 1803 | E. Evans, J. Clark | Machine for packing goods | ||
 | 98,925 | Jan. 18, 1870 | J. Clark | Pipe Tong | |
 | 143,439 | Oct. 07, 1873 | H. Crumlish | Bellows for Furnaces | |
 | 356,986 | Feb. 01, 1887 | J. Clark | Pipe Wrench | |
 | 367,596 | Aug. 02, 1887 | J. Clark | Pipe Wrench | |
 | 377,668 | Feb. 07, 1888 | J. Clark | Pipe Wrench | |
 | 424,858 | Apr. 01, 1890 | J. Clark | Wrench | |