Granted Patent
Utility
US 6,125,642 · App. 09/352,602
Oil level control system
Inventors:
G. Thomas Seener, Joseph H. Heffner, Roger D. Chamberlain, David C. Macke, Sr., Richard Livingston
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Jul 13, 1999
Inventors
G. Thomas Seener
Joseph H. Heffner
Roger D. Chamberlain
David C. Macke, Sr.
Richard Livingston
Assignee (at issue)
Sporlan Valve 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.