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| Patents Granted on 1798-03-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 201X | Mar. 15, 1798 | C. Holden | Improvement in wind mills | wind power apparatus | |
| 202X | Mar. 21, 1798 | E. Ormsbee | Screw engine for throwing water | water pumps | |
| 203X | Mar. 22, 1798 | S. Blydenburg | Candle Machine | chandler | |
| 204X | Mar. 24, 1798 | R. McKean | Steam saw mill | reciprocating sawmills | |
| 205X | Mar. 30, 1798 | A. Clarke | Mill for sawing boards | sawmills | |