Title:
Brush roll speed indicator
United States Patent 3253295


Inventors:
Waters, Robert S.
Application Number:
US36273464A
Publication Date:
05/31/1966
Filing Date:
04/27/1964
Assignee:
WESTINGHOUSE ELECTRIC CORP
Primary Class:
Other Classes:
73/514.39, 116/204, 116/DIG.42
International Classes:
A47L9/04
View Patent Images:
US Patent References:
3108163Magnetically operated rotary motion detector1963-10-22
3091680Ice detector1963-05-28
2713158Film movement indicator1955-07-12
2120011Suction cleaner1938-06-07
1907692Suction cleaner1933-05-09
1324416N/A1919-12-09