Granted Patent
Utility
US 6,578,804 · App. 09/875,859
Securing device for positioning a seat post of office chairs
Inventors:
Ming-Chuan Lin, Jack Wang
Patented Case
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Granted: Jun 17, 2003
Filed: Jun 8, 2001
Inventors
Ming-Chuan Lin
Jack Wang
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.