Granted Patent
Utility
US 6,579,039 · App. 09/770,324
Submergible tire structure
Inventor:
Leo M. Krenzler
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Jan 26, 2001
Inventor
Leo M. Krenzler
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.