Granted Patent
Utility
US 5,971,776 · App. 08/851,587
Adjustable spark plug boot
Inventors:
John E. Neel, John Walters
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: May 5, 1997
Inventors
John E. Neel
John Walters
Assignee (at issue)
Lexington Insulators
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.