United States Patent 3134954
Inventors:
Braun, Marinus J.
Publication Date:
05/26/1964
Other Classes:
200/19.330, 264/265, 264/229, 425/DIG.012, 264/272.180, 264/105, 29/877, 200/19.320, 439/824, 29/621
International Classes:
F02P7/02; H01C1/14; H01C7/00; F02P7/00