Title:
REVERSIBLE FOAM MATTRESS HAVING DIFFERENT DEGREES OF FIRMNESS
United States Patent 3534417
US Patent References:
Mattress construction having different degrees of firmness
- - 3089154

Mattress
- - 3110042

Mattress
- - 3210781


Inventors:
Boyles, Truman C.
Publication Date:
10/20/1970
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Assignee:
Truman, Boyles C.
Primary Class:
5/728
Other Classes:
5/727
International Classes:
A47C27/16; A47C27/14; A47C23/00; A47C27/22




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