Granted Patent
Utility
US 6,681,641 · App. 09/949,590
Clamp-on gas flowmeter
Inventor:
Joseph Baumoel
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Sep 10, 2001
Inventor
Joseph Baumoel
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.