Granted Patent
Utility
US 5,697,334 · App. 08/603,004
Spark plug with integral retainer nut
Inventor:
Matthew B. Below
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Feb 16, 1996
Inventor
Matthew B. Below
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.