Document Type and Number:
Japanese Patent JPS6367996
Kind Code:
U
Application Number:
JP16277686U
Publication Date:
May 07, 1988
Filing Date:
October 23, 1986
Export Citation:
International Classes:
G04B37/11; G04B37/18; G04B37/22; G04B39/02; (IPC1-7): G04B37/22; G04B37/18; G04B39/02
Domestic Patent References:
| JPS5613780B2 | 1981-03-31 | |||
| JPS607091B2 | 1985-02-22 |