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发明名称
BACKLIT DIGITIZER TABLET
摘要
申请公布号
EP0478691(A4)
申请公布日期
1993.01.27
申请号
EP19900911020
申请日期
1990.06.22
申请人
SUMMAGRAPHICS CORPORATION
发明人
SIEFER, DAVID, A.;PURCELL, ALEXANDER, M.
分类号
G01B7/00;G06F3/033;G06F3/041;G09F13/00;G09F13/04;G12B11/02;(IPC1-7):G08C21/00
主分类号
G01B7/00
代理机构
代理人
主权项
地址
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