Granted Patent
Utility
US 6,085,589 · App. 08/772,722
Material level sensing system calibration
Inventor:
William T. Cruickshank
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Dec 23, 1996
Inventor
William T. Cruickshank
Assignee (at issue)
Venture Measurement Company, LLC
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.