Granted Patent
Utility
US 5,204,630 · App. 07/721,046
Preignition warning device
Inventors:
William R. Seitz, Richard D. Taylor, David Smith
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jun 26, 1991
Inventors
William R. Seitz
Richard D. Taylor
David Smith
Assignee (at issue)
AlliedSignal, Inc.
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.