Title:
Epidural needle
United States Patent 2922420


Inventors:
Aiming, Cheng Peter
Application Number:
US69984257A
Publication Date:
01/26/1960
Filing Date:
11/29/1957
Assignee:
SIERRA ENG CO
Primary Class:
Other Classes:
604/158, D24/113
International Classes:
A61B17/34
View Patent Images:
Foreign References:
FR605067A1926-05-19