发明者
Douglas J McKnight
发表日期
2001/5/1
专利局
US
专利号
6225991
专利申请号
09/209,241
简介
This application is a Divisional of application Ser. No. 08/605,999, filed Feb. 9, 1996, now US Pat. No. 5,959.598, which in turn is a Continuation In-Part of application Ser. No. 08/505,654, filed Jul. 20, 1995, now issued as US Pat. No. 5,767.828. The contents of both applications are hereby incorporated by reference.
引用总数
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DJ McKnight - US Patent 6,225,991, 2001