Title:
Variable-pressure bed or mattress
United States Patent 1772310
Inventors:
Hart, Julian D.
Publication Date:
08/05/1930
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Export Citation:
Assignee:
Hart, Julian D.
Primary Class:
Other Classes:
5/715, 92/92, 5/933, 5/615, 91/40, 601/148, 92/48
International Classes:
A61G7/00