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All Patents in class 192/45.017
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
76,328Apr. 07, 1868W.H. Birch, J.B. JohnsonImprovement in friction-clutchhoists, winches, come-alongs
1,560,776Nov. 10, 1925B.S. Bishop, A.J. GiffordClutch for power feeddrilling and boring
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