Document Type and Number:
Japanese Patent JPS51150739
Kind Code:
U
Application Number:
JP7150375U
Publication Date:
December 02, 1976
Filing Date:
May 27, 1975
Export Citation:
International Classes:
G09B11/10; B44C1/28; G09B19/10; (IPC1-7): G09B19/10; G09B11/10
Domestic Patent References:
| JPS4838448U | 1973-05-12 | |||
| JPS3725809Y1 |