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| Patents Granted on 1838-03-17 | |||||
| Number | Date | Patentee | Title | Type | |
| 635 | Mar. 17, 1838 | J. Wing | Machine for sawing eaves-troughs for conducting water from buildings, &c., applicable to other purposes | circular saws | |
| 636 | Mar. 17, 1838 | S. Merrick | Punch | leather punches | |
| 645 | Mar. 17, 1838 | L. Wilder | Back for forges and furnaces | forge tuyeres | |