Document Type and Number:
Japanese Patent JPH021756
Kind Code:
U
Application Number:
JP8020788U
Publication Date:
January 08, 1990
Filing Date:
June 17, 1988
Export Citation:
International Classes:
G03G21/20; G03G15/00; G03G15/20; G03G21/00; (IPC1-7): G03G15/00; G03G15/20
Domestic Patent References:
| JPS5717957A | 1982-01-29 |
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