Beds – Mattress – Supported on or removably attachable to another mattress
Reexamination Certificate
2006-01-24
2006-01-24
Trettel, Michael (Department: 3673)
Beds
Mattress
Supported on or removably attachable to another mattress
C005S909000, C005S727000, C005S740000
Reexamination Certificate
active
06988287
ABSTRACT:
A topper for selectively changing the firmness of a bed includes first and second sheets of foam which are bonded together at a flexible interface. The firmness of the first and second sheets differ, so that by putting one sheet face up on the bed one level of firmness is achieved, and by reversing the topper and putting the other sheet face up another level of firmness is achieved.
REFERENCES:
patent: 4336621 (1982-06-01), Schwartz et al.
patent: RE32734 (1988-08-01), McLeod
patent: 4955095 (1990-09-01), Gerrick
patent: 6101653 (2000-08-01), England
patent: 6159574 (2000-12-01), Landvik et al.
patent: 6602579 (2003-08-01), Landvik
patent: 6715173 (2004-04-01), Barman et al.
Masters Ted
Trettel Michael
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