Title:
Electro-pneumatically operated bed oscillator
United States Patent 3392723
US Patent References:
Variable-pressure bed or mattress
- - 1772310
Invalid pad
- - 2437006
Hospital bed
- - 2678452
Floating contour cushion
- - 2819712
Therapeutic device
- - 3071130
Variable-pressure bed or mattress
- - 1772310
Invalid pad
- - 2437006
Hospital bed
- - 2678452
Floating contour cushion
- - 2819712
Therapeutic device
- - 3071130
Inventors:
Calvin, Charles E.
Publication Date:
07/16/1968
View Patent Images:
Export Citation:
Assignee:
RICHFIELD OIL CORP
Primary Class:
Other Classes:
5/610, 601/41, 5/108
International Classes:
A61H1/00
US Patent References:
| 3247528 | Bed-tilting device |
Foreign References:
| DE581796C |