Document Type and Number:
Japanese Patent JPS5435645
Kind Code:
U
Application Number:
JP10823877U
Publication Date:
March 08, 1979
Filing Date:
August 15, 1977
Export Citation:
International Classes:
G03B21/00; G03B31/00; G03B31/06; (IPC1-7): G03B21/00; G03B31/00
Domestic Patent References:
| JP46034073A |