Patents for Star Ball Retainer Co.


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Patents for Star Ball Retainer Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	604,678	May 24, 1898	H.B. Keiper	Ball-retainer for antifriction-bearings
	D28,868	Jun. 14, 1898	H.B. Keiper	Design for a ball-retainer
	686,617	Nov. 12, 1901	H.B. Keiper	Ball-retainer