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| Patents Granted on 1797-03-__ | |||||
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| Number | Date | Patentee | Title | Type | |
| 157X | Mar. 11, 1797 | T. Hirsh | Stoves | stoves | |
| 158X | Mar. 11, 1797 | W. Booker | Machine for Thrashing Wheat, etc. | miller | |
| 159X | Mar. 18, 1797 | S. Betts | Tide Water Wheel | tide mills | |
| 160X | Mar. 28, 1797 | N. Briggs | Improvement in washing clothes | washing machines | |
| 161X | Mar. 29, 1797 | C. Wheaton | Stoves | stoves | |