Title:
Tube bending method and machine
United States Patent 3388573

Inventors:
Presley Jr., Ned H.
Publication Date:
06/18/1968
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Primary Class:
72/7.300
Other Classes:
72/342.400, 72/364, 72/172, 72/128, 72/369
International Classes:
B21D7/12; B21D7/00
US Patent References:
3299681Program controlled tube bender