Document Type and Number:
Japanese Patent JPS5512218
Kind Code:
U
Application Number:
JP9296478U
Publication Date:
January 25, 1980
Filing Date:
July 06, 1978
Export Citation:
International Classes:
G03B1/00; G03B23/02; G11B23/00; G11B23/07; (IPC1-7): G03B23/02; G03B1/00; G11B23/00
Domestic Patent References:
JPS5332735B2 | 1978-09-09 |