Granted Patent
Utility
US 6,793,891 · App. 10/210,712
Pipettor and externally sealed pipette tip
Inventor:
Felxi Yiu
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Jul 30, 2002
Inventor
Felxi Yiu
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.