Document Type and Number:
Japanese Patent JPS5173037
Kind Code:
U
Application Number:
JP14769774U
Publication Date:
June 09, 1976
Filing Date:
December 05, 1974
Export Citation:
International Classes:
G03B31/00; G03B31/02; G11B5/54; G11B21/16; (IPC1-7): G03B31/00
Domestic Patent References:
| JPS42190Y1 | 1967-01-09 | |||
| JPS4917204A | 1974-02-15 |