Title:
Multiple dosage syringe
United States Patent 2875761


Inventors:
Helmer, Norman D.
Easton, Fred H.
Application Number:
US61307956A
Publication Date:
03/03/1959
Filing Date:
10/01/1956
Assignee:
Helmer, Norman D.
Easton, Fred H.
Primary Class:
Other Classes:
222/43, 222/386
International Classes:
A61M5/315
View Patent Images:
US Patent References:
2409656Hypodermic syringe1946-10-22
2183318Medical and surgical apparatus1939-12-12
Foreign References:
FR369122A1906-12-29
CH293302A1953-09-15
FR1085500A1955-02-02