Document Type and Number:
Japanese Patent JPS5398551
Kind Code:
U
Application Number:
JP331577U
Publication Date:
August 10, 1978
Filing Date:
January 14, 1977
Export Citation:
International Classes:
G02B6/24; H01B11/00; H01P3/00; (IPC1-7): G02B5/14; H01B11/00; H01P3/00
Domestic Patent References:
| JP51087438B | ||||
| JPS292047Y1 |