Document Type and Number:
Japanese Patent JPS4712906
Kind Code:
U
Application Number:
JP1553471U
Publication Date:
October 16, 1972
Filing Date:
March 10, 1971
Export Citation:
International Classes:
H01F7/18; G11B15/10; H01F7/06; (IPC1-7): G11B15/10; H01F7/18