Document Type and Number:
Japanese Patent JPS5339209
Kind Code:
Y2
Application Number:
JP6076974U
Publication Date:
September 22, 1978
Filing Date:
May 29, 1974
Export Citation:
International Classes:
G03B23/02; G11B23/06; G11B23/07; (IPC1-7): G11B23/06; G03B23/02