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发明名称
Invertible trackball
摘要
The present invention relates to cursor control devices for computers, and particularly relates to cursor control devices for personal computers which involve the use of a ball rotatable by the fingers for controlling cursor movement.
申请公布号
US5008528(A)
申请公布日期
1991.04.16
申请号
US19890380092
申请日期
1989.07.14
申请人
LOGITECH S.A.
发明人
DUCHON, DOUGLAS
分类号
G06F1/16;G06F3/033
主分类号
G06F1/16
代理机构
代理人
主权项
地址
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