Title:
Mattress
United States Patent 3419920

Inventors:
Maddux Jr., Forrest E.
Greeno, John R.
Publication Date:
01/07/1969
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Primary Class:
5/695
Other Classes:
5/727, 5/411, 5/498, 5/722
International Classes:
A47C27/14
US Patent References:
3188660
3210781Mattress
3249952Articulated hospital bedding
3308490Cushion construction




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