Patents for Frederic Castle


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Patents for Frederic Castle
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
112,780	Mar. 21, 1871	F. Castle	Improvement in Combined Gauges and Try Squares	clapboard markers
116,805	Jul. 11, 1871	F. Castle	Improvement in Combined Gauges and Try Squares	clapboard markers