Document Type and Number:
Japanese Patent JPS5056936
Kind Code:
A
Application Number:
JP10431673A
Publication Date:
May 19, 1975
Filing Date:
September 14, 1973
Export Citation:
International Classes:
G03B19/18; G03B13/02; G03B17/00; G03B17/14; (IPC1-7): G03B13/02; G03B17/00
Domestic Patent References:
| JPS4811310U | 1973-02-08 | |||
| JP33000123A | ||||
| JP29006533A | ||||
| JP28003084A | ||||
| JP37002237A |