United States Patent 3461567
Inventors:
Villers, Philippe
Hayes, Woodrow L.
Publication Date:
08/19/1969
Assignee:
Singer, General Precision
Other Classes:
219/231, 219/229, 101/28, 219/243, 33/578, 101/27, 347/171, 346/77E
International Classes:
B41F19/02; B44B5/02; B41F19/00; B44B5/00; B23B49/02; B26F1/32; B23Q35/02