Document Type and Number:
Japanese Patent JPS50140123
Kind Code:
A
Application Number:
JP4793074A
Publication Date:
November 10, 1975
Filing Date:
April 27, 1974
Export Citation:
International Classes:
G03B31/00; G03B19/18; (IPC1-7): G03B31/02
Domestic Patent References:
| JPS49115545A | 1974-11-05 |