Title:
Flexible check valve
United States Patent 2999499
Inventors:
Willet, Richard H.
Publication Date:
09/12/1961
Export Citation:
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Assignee:
Cutter, Lab
Primary Class:
604/83
Other Classes:
137/539, 239/576, 251/342, 604/80, 604/251
International Classes:
A61M5/14; A61M39/24; A61M5/14; A61M39/00
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US Patent References:
2866457Apparatus for administration of parenteral fluids
2797703Plastic grease fitting
2343828Safety tube
2262169Valve stem
2121354Valve
1880948Valve
1220872N/A
Foreign References:
DE602142C