Document Type and Number:
Japanese Patent JPS5164642
Kind Code:
U
Application Number:
JP13826274U
Publication Date:
May 21, 1976
Filing Date:
November 15, 1974
Export Citation:
International Classes:
G03B21/44; G03B1/00; G03B31/00; G11B15/00; G11B15/29; (IPC1-7): G03B31/00; G03B1/00; G11B15/00
Domestic Patent References:
| JPS337631Y1 | ||||
| JP36015227A |