Document Type and Number:
Japanese Patent JPS4884208
Kind Code:
U
Application Number:
JP716772U
Publication Date:
October 13, 1973
Filing Date:
January 17, 1972
Export Citation:
International Classes:
G09B5/06; B42F7/00; B42F13/28; G11B5/00; (IPC1-7): G11B5/00; B42F13/28; G09B5/06
Foreign References:
| US3529832A | 1970-09-22 | |||
| GB707949A | 1954-04-28 |