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All Patents in class 474/156
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
2,356,437	Aug. 22, 1944	D.J. Smith	Chain saw construction	handheld chainsaws
2,409,775	Oct. 22, 1946	A.W. Mall	Chain-saw machine	handheld chainsaws
3,391,863	Jul. 09, 1968	R.W. Morner, H.W. Huffman	Data card punching device

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