Document Type and Number:
Japanese Patent JPH0310643
Kind Code:
Y2
Application Number:
JP4064981U
Publication Date:
March 15, 1991
Filing Date:
March 25, 1981
Export Citation:
International Classes:
H01F7/20; B24B31/112; B24B37/00; (IPC1-7): H01F7/20; B24B31/112
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