Granted Patent
Utility
US 6,742,491 · App. 10/322,091
Engine lubrication system
Inventors:
Giuseppe Ghelfi, Paolo Mion, Stefano Albanello, Maurizio Borio
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Dec 17, 2002
Inventors
Giuseppe Ghelfi
Paolo Mion
Stefano Albanello
Maurizio Borio
Assignee (at issue)
Tecumseh Products 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.