Document Type and Number:
Japanese Patent JPS50145133
Kind Code:
A
Application Number:
JP5248774A
Publication Date:
November 21, 1975
Filing Date:
May 11, 1974
Export Citation:
International Classes:
G03B7/093; G03B9/62; (IPC1-7): G03B7/08; G03B9/62
Domestic Patent References:
| JPS4917726A | 1974-02-16 |