Granted Patent
Utility
US 6,604,910 · App. 09/841,773
Fluid controlled pumping system and method
Inventor:
Joseph A. Zupanick
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Apr 24, 2001
Inventor
Joseph A. Zupanick
Assignee (at issue)
CDX Gas, LLC
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.