Granted Patent
Utility
US 6,672,392 · App. 10/096,881
Gas recovery apparatus, method and cycle having a three chamber evacuation phase for improved natural gas production and down-hole liquid management
Inventor:
Donald D. Reitz
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Mar 12, 2002
Inventor
Donald D. Reitz
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.