Granted Patent
Utility
US 5,746,728 · App. 08/534,609
Fluid pump without dead volume
Inventor:
Daniel Py
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Sep 27, 1995
Inventor
Daniel Py
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.