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All Patents in class 474/34
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
2,523,397	Sep. 26, 1950	G.J. Kasselmann, H.J. Siekmann	Change Speed Gearing for Lathe Headstocks	industrial machine gearing
2,561,712	Jul. 24, 1951	H.J. Siekmann, G.J. Kasselmann	Adjustable pulley v-belt transmission	metalworking machine mechanisms

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