Document Type and Number:
Japanese Patent JPS5111442
Kind Code:
A
Inventors:
ISHIGURO YASUO
Application Number:
JP8226674A
Publication Date:
January 29, 1976
Filing Date:
July 19, 1974
Export Citation:
Assignee:
COPAL CO LTD
International Classes:
G03B19/18; G03B21/36; (IPC1-7): G03B7/00; G03B21/36