Stock material or miscellaneous articles – Sheet including cover or casing – Foamed or expanded material encased
Patent
1990-03-27
1991-06-25
VanBalen, William J.
Stock material or miscellaneous articles
Sheet including cover or casing
Foamed or expanded material encased
428157, 428159, 4283166, B32B 326
Patent
active
050265857
ABSTRACT:
A mat for a chair corresponding in size to the seat of an ordinary chair has a top surface which is inclined forwardly and downwardly from its rear edge adapted for positioning normally at the bottom of the back of the chair, and a bottom surface adapted for resting normally on the seat of the chair. The top and bottom surfaces of the mat have an angle between 5.degree. and 8.degree. therebetween.
REFERENCES:
patent: 4028450 (1977-06-01), Gould
patent: 4471020 (1984-09-01), McCarthy
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