Granted Patent
Utility
US 6,655,452 · App. 09/967,359
Downhole gauge carrier apparatus
Inventor:
Fred Zillinger
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Sep 28, 2001
Inventor
Fred Zillinger
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.