United States Patent 3433117
Inventors:
Gowen Jr., Edward F.
Ollis Jr., Raymond
Walker, Richard A.
Publication Date:
03/18/1969
Assignee:
STANDARD PRESSED STEEL CO
International Classes:
B21H3/02; F04B53/10; F16B31/06; F16B33/02; B21H3/00; F16B31/00; F16B33/00; F16B27/00; F16B35/00; F16B29/00