Patents for J. C. Preston


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Patents for J. C. Preston
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
80,141	Jul. 21, 1868	H. Clendenen	Improvement in saw-filing machines	saw sharpening machines
180,208	Jul. 25, 1876	A. Denney	Improvement in machines for shaping grain-cradle fingers	specialty woodworking machines