Title:
Flexible check valve
United States Patent 2999499


Inventors:
Willet, Richard H.
Application Number:
US74803558A
Publication Date:
09/12/1961
Filing Date:
07/11/1958
Assignee:
Cutter, Lab
Primary Class:
Other Classes:
137/539, 239/576, 251/342, 604/80, 604/251
International Classes:
A61M5/14; A61M39/24
View Patent Images:
US Patent References:
2866457Apparatus for administration of parenteral fluids1958-12-30
2797703Plastic grease fitting1957-07-02
2343828Safety tube1944-03-07
2262169Valve stem1941-11-11
2121354Valve1938-06-21
1880948Valve1932-10-04
1220872N/A1917-03-27
Foreign References:
DE602142C1934-09-01