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| Patents for A. H. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 32,467 | Jun. 04, 1861 | A.H. Clark | Shingle-machine | shingle machines | |
| 39,035 | Jun. 30, 1863 | L.S. Colburn | Improvement in churns | ||
| 39,272 | Jul. 21, 1863 | A.H. Clark | Shingle machine | shingle machines | |
| 182,492 | Sep. 19, 1876 | H.C. Stouffer | Pipe-Wrench | pipe tongs | |