Granted Patent
Utility
US 6,780,381 · App. 10/119,100
Pipettor and externally sealed pipette tip
Inventor:
Felix H. Yiu
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Apr 8, 2002
Inventor
Felix H. 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.