Document Type and Number:
Japanese Patent JPS57188307
Kind Code:
U
Application Number:
JP7662381U
Publication Date:
November 30, 1982
Filing Date:
May 27, 1981
Export Citation:
International Classes:
H01F5/02; H01F7/06; H01F7/16; (IPC1-7): H01F7/16; H01F5/02
Domestic Patent References:
| JP38025329A | ||||
| JPS50147157U | 1975-12-06 | |||
| JP44012539A |