Document Type and Number:
Japanese Patent JPS5057297
Kind Code:
U
Application Number:
JP10981373U
Publication Date:
May 29, 1975
Filing Date:
September 21, 1973
Export Citation:
International Classes:
A61B3/12; A61B3/10; G02C1/00; G02C7/04; (IPC1-7): A61B3/10; G02C7/04
Domestic Patent References:
| JPS4913039U | 1974-02-04 |