Document Type and Number:
Japanese Patent JPS4956918
Kind Code:
U
Application Number:
JP9954572U
Publication Date:
May 20, 1974
Filing Date:
August 25, 1972
Export Citation:
International Classes:
H01F38/14; G11B5/02; G11B5/52; H04N5/78; (IPC1-7): G11B5/02; G11B5/52; H04N5/78
Domestic Patent References:
| JPS4222406Y1 | 1967-12-21 |