Beds – Bedclothing – And means to facilitate changing thereof
Patent
1990-03-21
1990-10-30
Trettel, Michael F.
Beds
Bedclothing
And means to facilitate changing thereof
5440, A47C 2106
Patent
active
049658972
ABSTRACT:
An adjustable appendage that can be located under any mattress for the purpose of providing back support in the pelvic bone area; and furthermore an appendage that can be inflatably adjusted for any degree of support necessary to provide optimum comfort.
REFERENCES:
patent: 2521530 (1950-09-01), McCuffage
patent: 3026541 (1962-03-01), Murat
patent: 3806968 (1974-04-01), Robey
patent: 3974827 (1976-08-01), Bodeen
patent: 4005498 (1977-02-01), Starr et al.
patent: 4669455 (1987-06-01), Bellati
patent: 4791682 (1988-12-01), Iwase
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