United States Patent 3426740
Inventors:
Hufton, Arthur G.
Reddel, Robert J.
Publication Date:
02/11/1969
Other Classes:
315/209R, 315/209T, 123/643, 123/146.50A, 335/205
International Classes:
F02P7/03; H01H36/00; F02P7/00; F02P3/00; F02P7/10; H01H9/00