Granted Patent
Utility
US 6,789,420 · App. 10/042,525
Oil flow sensing
Inventors:
Eric K. Larson, Robert Kellicker
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Oct 19, 2001
Inventors
Eric K. Larson
Robert Kellicker
Assignee (at issue)
Ark-Les Corporation
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.