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All Patents in class 116/102
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,915Dec. 28, 1840R. PorterFire-alarmfire alarms
2,040Apr. 10, 1841R. Porter, J.F. SchermerhornImprovement in agricultural machines for tilling and planting at the same operationcultivators and tillers
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