Hospital mattress with articulated frame
United States Patent 3316568
US Patent References:
Double hinged inner spring unit
- - 3099843

Mattress construction
- - 3111690

Articulated hospital bedding
- - 3249952


Inventors:
Janapol, Melvin N.
Publication Date:
05/02/1967
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Assignee:
Janapol, Melvin N.
Primary Class:
5/716
Other Classes:
5/722
International Classes:
A47C27/00