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Patents for H. A. Spangler
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
RE5,646Nov. 04, 1873L. Morrison, A.G. HarmsImprovement in saw-hangingsreciprocating sawmills
RE5,647Nov. 04, 1873L. Morrison, A.G. HarmsImprovement in saw-hangingsreciprocating sawmills
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