Document Type and Number:
Japanese Patent JPS50159737
Kind Code:
A
Application Number:
JP6777374A
Publication Date:
December 24, 1975
Filing Date:
June 14, 1974
Export Citation:
International Classes:
G03C8/36; G03C7/00; G03C8/10; (IPC1-7): G03C7/00
Domestic Patent References:
JPS50104933A | 1975-08-19 | |||
JPS5091324A | 1975-07-22 | |||
JP36012393A |
Foreign References:
US3579334A | 1971-05-18 |