Document Type and Number:
Japanese Patent JPS50832
Kind Code:
A
Application Number:
JP4867173A
Publication Date:
January 07, 1975
Filing Date:
April 28, 1973
Export Citation:
International Classes:
G03B7/083; G03B7/089; G03B9/70
Domestic Patent References:
JPS439139Y1 | 1968-04-22 | |||
JPS4717813U | 1972-10-30 |
Next Patent: JPS50833