Adjustable bed spring and mattress
United States Patent 2519729
US Patent References:
/0040056.html
- - 0040056
/0554580.html
- - 0554580
/0861868.html
- - 0861868
Invalid bed
- - 1404482
Hospital bed
- - 1905355
/0040056.html
- - 0040056
/0554580.html
- - 0554580
/0861868.html
- - 0861868
Invalid bed
- - 1404482
Hospital bed
- - 1905355
Inventors:
Thelma, Alexander
Publication Date:
08/22/1950
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Assignee:
Thelma, Alexander
Primary Class:
Other Classes:
5/619, 5/623, 5/624
International Classes:
A47C20/04; A47C20/00