Document Type and Number:
Japanese Patent JPS5054154
Kind Code:
U
More Like This:
Application Number:
JP10726173U
Publication Date:
May 23, 1975
Filing Date:
September 13, 1973
Export Citation:
International Classes:
G03B7/16; G03B15/02; G03B15/03; G03B17/18; (IPC1-7): G03B15/03; G03B7/16; G03B17/18
Domestic Patent References:
JPS4426866Y1 | 1969-11-10 | |||
JP44025744A |