Friction device for operating knobs in adjustable apparatus
United States Patent 2660904
US Patent References:
Control quadrant
- - 2373225
Control knob and associated structure
- - 2444485
Friction device for operating knobs in adjustable apparatus
- - 2509058
Operating and control lever and the like
- - 2509271
Control operating device
- - 2560015
Control quadrant
- - 2373225
Control knob and associated structure
- - 2444485
Friction device for operating knobs in adjustable apparatus
- - 2509058
Operating and control lever and the like
- - 2509271
Control operating device
- - 2560015
Inventors:
Hilsinger Jr., Harry A.
Publication Date:
12/01/1953
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Export Citation:
Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
Other Classes:
74/553, 200/4, 74/531, 200/330
International Classes:
G05G5/26; G05G5/00