Document Type and Number:
Japanese Patent JPS49150228
Kind Code:
U
Application Number:
JP5063373U
Publication Date:
December 26, 1974
Filing Date:
April 26, 1973
Export Citation:
International Classes:
G03B21/43; G03B21/00; G03B21/44; G03B21/48; (IPC1-7): G03B21/43
Domestic Patent References:
| JPS4033496Y1 |