Patents for Edward W. Hazen


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Patents for Edward W. Hazen
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
392,426	Nov. 06, 1888	R. Hayden	Try-Square	try squares
392,427	Nov. 06, 1888	R. Hayden	Improvements in Bevel Squares	bevels