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All Patents in class 116/102 | |||||
Number | Date | Patentee | Title | Type | |
1,915 | Dec. 28, 1840 | R. Porter | Fire-alarm | fire alarms | |
2,040 | Apr. 10, 1841 | R. Porter, J.F. Schermerhorn | Improvement in agricultural machines for tilling and planting at the same operation | cultivators and tillers |