Document Type and Number:
Japanese Patent JPS63139582
Kind Code:
U
Application Number:
JP3048587U
Publication Date:
September 14, 1988
Filing Date:
March 04, 1987
Export Citation:
International Classes:
G04B37/10; (IPC1-7): G04B37/10
Domestic Patent References:
| JP59064585B | ||||
| JP61157217B |