Document Type and Number:
Japanese Patent JPS50140122
Kind Code:
A
Application Number:
JP4744174A
Publication Date:
November 10, 1975
Filing Date:
April 26, 1974
Export Citation:
International Classes:
G03C5/00; G03B21/11; G03B33/00; G03D15/10; (IPC1-7): G03B33/00; G03D15/10