Document Type and Number:
Japanese Patent JPS5541848
Kind Code:
U
Application Number:
JP12373278U
Publication Date:
March 18, 1980
Filing Date:
September 11, 1978
Export Citation:
International Classes:
G02C3/00; G02C11/00; (IPC1-7): G02C11/00; G02C3/00
Domestic Patent References:
| JP50143547B | ||||
| JP50114343B |