Granted Patent
Utility
US 6,575,006 · App. 10/136,539
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Inventor:
Lan-Kun Don
Patented Case
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Granted: Jun 10, 2003
Filed: May 1, 2002
Inventor
Lan-Kun Don
Assignee (at issue)
Tung Lung Metal Industry Co., Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.