Granted Patent
Utility
US 6,826,952 · App. 10/639,156
Multiple tank level indication system and method
Inventor:
Dale R. Herbstritt
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Aug 11, 2003
Inventor
Dale R. Herbstritt
Assignee (at issue)
Ingersoll-Rand Company
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.