Title:
Hollow mattress and inflation control therefor
United States Patent 2719986


Inventors:
Rand, Henry J.
Application Number:
US20108550A
Publication Date:
10/11/1955
Filing Date:
12/16/1950
Assignee:
AIR MASS INC
Primary Class:
Other Classes:
128/DIG.20, 137/625.11, 297/DIG.3, 601/26
International Classes:
A61G7/057
View Patent Images:
US Patent References:
2345073Apparatus for operating therapeutic devices1944-03-28
2113398Fitting for fluid circulating systems1938-04-05
1883727Continuous blow-off valve1932-10-18
1820269Pneumatic gear shift1931-08-25
1772310Variable-pressure bed or mattress1930-08-05
1147560N/A1915-07-20
0885145N/A1908-04-21