Sleeping mattress

Details Sleeping mattress Sleeping mattress

1989-05-05

1990-05-15

Trettel, Michael F.

Beds

Bedclothing

And means to facilitate changing thereof

5448, A47C 2722

Patent

active

049245422

ABSTRACT:
The present invention provides a sleeping mattress comprising:

REFERENCES:
patent: 3940811 (1976-03-01), Tomikawa et al.
patent: 4143435 (1979-03-01), Masuda
patent: 4161045 (1979-07-01), Regan
patent: 4330892 (1982-03-01), Fukushima
patent: 4509219 (1985-04-01), Yagi
patent: 4574911 (1986-03-01), Yogi

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