Document Type and Number:
Japanese Patent JPS55125612
Kind Code:
U
Application Number:
JP2489279U
Publication Date:
September 05, 1980
Filing Date:
March 01, 1979
Export Citation:
International Classes:
G02C1/00; G02C1/08; (IPC1-7): G02C1/08
Domestic Patent References:
| JPS3011267Y1 | ||||
| JPS4932642B1 | 1974-09-02 |