Title:
Hollow mattress and inflation control therefor
United States Patent 2719986
US Patent References:
/0885145.html
- - 0885145

/1147560.html
- - 1147560

Variable-pressure bed or mattress
- - 1772310

Pneumatic gear shift
- - 1820269

Continuous blow-off valve
- - 1883727


Inventors:
Rand, Henry J.
Publication Date:
10/11/1955
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Assignee:
AIR MASS INC
Primary Class:
5/713
Other Classes:
137/625.110, 128/DIG.020, 297/DIG.003, 601/26
International Classes:
A61G7/057
US Patent References:
2113398Fitting for fluid circulating systems
2345073Apparatus for operating therapeutic devices