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Patents for John C. Langdon
Patents 1 - 8 of 8
First set of recordsLast set of records
NumberDatePatenteeTitleType
FX-3,112Jun. 05, 1819J.C. Langdon, B. LangdonPropelling boats by horse powernautical propulsion apparatus
3,760XSep. 26, 1823J. Trash, J.C. LangdonMachine for grinding grainmiller
5,457XApr. 18, 1829A. Salisbury, J.C. LangdonMachine for Breaking Flax and Hempflax and hemp machines
5,590XJul. 29, 1829A. Salisbury, J.C. LangdonBreaking and Dressing Hemp and Flaxflax and hemp machines
286Jul. 19, 1837B. LangdonMode of applying horse or other animal power to propelling machineryanimal powered apparatus
555Jan. 09, 1838B. LangdonMachine for planing plank boards and clapboardswood planers
556Jan. 09, 1838B. LangdonMachine for planing shinglesshingle machines
2,689Jun. 22, 1842B. LangdonImprovement in plowsplows
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