Patents for William F. Goldthwaite


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Patents for William F. Goldthwaite
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
413,961	Oct. 29, 1889	D.R. Porter	Pipe Wrench	pipe wrenches
426,956	Apr. 29, 1890	D.R. Porter	Improved Pipe Wrench	pipe wrenches