United States Patent 2986953
Inventors:
Armond, Harry DE.
Meeker, Leonard N.
Publication Date:
06/06/1961
Assignee:
Horace, Rowe N.
Other Classes:
84/746, 338/153, 84/229, 74/561, 84/741
International Classes:
G05G1/14; H01C10/14; H01C10/00
US Patent References:
| 2534939 | Pedal control for rheostats | | | |
| 2762891 | Control units for dental apparatus | | | |