Document Type and Number:
Japanese Patent JPS51128538
Kind Code:
U
Application Number:
JP5016675U
Publication Date:
October 18, 1976
Filing Date:
April 14, 1975
Export Citation:
International Classes:
G03B23/02; G03B21/00; (IPC1-7): G03B21/00
Domestic Patent References:
| JPS5040120A | 1975-04-12 |