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Patents for W. E. Bertsch
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
888,765May 26, 1908B.D. StevensDriving mechanism for planers
954,146Apr. 05, 1910B.D. StevensHolding device for planer-head bits
995,024Jun. 13, 1911H.J. MitchellPlaner-head
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