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Patents Granted on 1797-01-?? | |||||
Number | Date | Patentee | Title | Type | |
146X | Jan. 06, 1797 | J. Nazro | Improvement in making soap | manufacturing processes | |
147X | Jan. 06, 1797 | J. Nazro | Extracting Alkali from Marine Salt and Kelp | making alkali | |
148X | Jan. 21, 1797 | C.W. Peale | Improvement in bridges |