Granted Patent
Utility
US 5,280,142 · App. 07/778,701
Heat shielded exhaust system component
Inventor:
Martin Keller
Patented Case
View Patent ↗
Granted: Jan 18, 1994
Filed: Oct 18, 1991
Inventor
Martin Keller
Assignee (at issue)
AP Parts Manufacturing 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.