Granted Patent
Utility
US 6,647,982 · App. 09/342,953
Gas flow device
Inventors:
LeNoir E. Zaiser, Kevin Confoy
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jun 29, 1999
Inventors
LeNoir E. Zaiser
Kevin Confoy
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.