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Patents Granted on 1831-10-07 | |||||
Number | Date | Patentee | Title | Type | |
6,789X | Oct. 07, 1831 | P. Chase | Coal, anthracite, high steam and hydrogen gas applied to produce combustion | stationary boilers | |
6,790X | Oct. 07, 1831 | T. Hinkley | Cleaning chimneys |