B - Operations – Transporting – 21 – H
Patent
B - Operations, Transporting
21
H
10/4
B21H 3/02 (2006.01) B21H 3/06 (2006.01)
Patent
CA 1131417
Abstract of the Disclosure A method for making a pointed, threaded fastener by threading, tapering and pointing in thread rolling equipment a screw blank having a cavity extending longitudinally into the blank from the end of the shank.
359113
Aluminum Company Of America
Smart & Biggar
LandOfFree
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