Document Type and Number:
Japanese Patent JPS52163305
Kind Code:
U
Application Number:
JP7310176U
Publication Date:
December 10, 1977
Filing Date:
June 04, 1976
Export Citation:
International Classes:
H04B1/20; G11B31/00; H04B1/06; (IPC1-7): G11B31/00; H04B1/06