Title:
Pneumatic mattress
United States Patent 2415150
US Patent References:
/0945234.html
- - 0945234

Mattress
- - 1475771

/0716752.html
- - 0716752

/1307825.html
- - 1307825

Mattress
- - 2247667


Inventors:
Russell, Stein Michael
Publication Date:
02/04/1947
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Assignee:
Russell, Stein Michael
Primary Class:
5/710
Other Classes:
267/117, 52/2.190, 261/1
International Classes:
A47C23/047; A47C23/00
US Patent References:
0802526
1296359
1772310Variable-pressure bed or mattress