Oscillating die and punch press combination
United States Patent 3122042
Inventors:
Littell, Frederick M.
Wiig, Chester M.
Publication Date:
02/25/1964
Assignee:
LITTELL MACHINE CO F J
Other Classes:
83/244, 83/216, 83/556
International Classes:
B21D28/06; B23D15/06; B21D28/02; B23D15/00
US Patent References:
| 2920521 | Variable angle strip cutting machine | | | |