Document Type and Number:
Japanese Patent JPS5475737
Kind Code:
U
Application Number:
JP14946977U
Publication Date:
May 29, 1979
Filing Date:
November 09, 1977
Export Citation:
International Classes:
G03B21/00; G03B21/32; G03B23/10; (IPC1-7): G03B21/32; G03B23/10
Domestic Patent References:
| JPS49104626A | 1974-10-03 |