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Patents for Leslie S. Hall
Patents 16 - 18 of 18
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NumberDatePatenteeTitleType
1,655,542Jan. 10, 1928L.S. HallDie head for threading machines and the likepipe threading machines
1,666,135Apr. 17, 1928L.S. HallBelt-tensioning device for threading machines and the likepipe threading machines
1,673,979Jun. 19, 1928L.S. HallCutting off and reaming attachment for threading machines and the likepipe threading machines
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