Patents for Charles F. Hilker


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Patents for Charles F. Hilker
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
684,432	Oct. 15, 1901	H.R. Isler	Engine Lathe	metal lathes
684,433	Oct. 15, 1901	H.R. Isler	Differential Speed Mechanism	metal lathes
704,645	Jul. 15, 1902	H.R. Isler	Differential Speed Mechanism	metal lathes