Title:
VARIABLE FIRMNESS SLEEP UNIT
Document Type and Number:
United States Patent 3551924
Inventors:
Frye Sr., James R.
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Publication Date:
01/05/1971
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Referenced by:
Export Citation:
Assignee:
James Sr., Frye R.
Primary Class:
Other Classes:
5/248, 5/727, 5/935
International Classes:
A47C31/12; A47C31/00; A47C23/00; A47C27/08