Document Type and Number:
Japanese Patent JPS5236927
Kind Code:
U
Application Number:
JP12373875U
Publication Date:
March 16, 1977
Filing Date:
September 08, 1975
Export Citation:
International Classes:
G03B19/18; G03B17/00; (IPC1-7): G03B7/00; G03B17/00
Domestic Patent References:
JPS4833823A | 1973-05-14 | |||
JPS463706A | ||||
JPS503167A | 1975-01-14 | |||
JP50054151B | ||||
JPS4510073Y1 | 1970-05-09 |