Document Type and Number:
Japanese Patent JPS4891903
Kind Code:
A
Application Number:
JP2311272A
Publication Date:
November 29, 1973
Filing Date:
March 08, 1972
Export Citation:
International Classes:
G11B31/00; H04M1/64; (IPC1-7): H04M1/64
Domestic Patent References:
| JP46019244A | ||||
| JP42021257A |