United States Patent 2425728
US Patent References:
Pillow
- - 1846312

Seat
- - 1916056

Mattress
- - 2146059

/0926375.html
- - 0926375

Mattress and cushion
- - 1700339


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Primary Class:
5/716
Other Classes:
5/738
US Patent References:
0027667
2326441Mattress covering
0137030
Foreign References:
GB407207A
DE278795C
GB129415A