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| Patents for Alfred B. Couch | |||||
| Number | Date | Patentee | Title | Type | |
| 89,468 | Apr. 27, 1869 | A.B. Couch | Engine Lathe | metal lathes | |
| 99,409 | Feb. 01, 1870 | A.B. Couch | Improved Machine for Planing Iron | metal planers | |
| 103,021 | May 17, 1870 | A.B. Couch | Shaping Metals | metal planers | |