Spring-cushion structures and cushioning material therefor
United States Patent 3315283

Inventors:
Larsen, Ronald L.
Publication Date:
04/25/1967
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Assignee:
WOOD CONVERSION CO
Primary Class:
Other Classes:
264/DIG.081, 297/452.500, 5/721, 297/DIG.002
International Classes:
A47C27/04
US Patent References:
3133852Ventilating spacer and method