Granted Patent
Utility
US 5,456,007 · App. 08/173,023
Assist method and apparatus for fitting close tolerance valves into bores
Inventors:
Nelson David Bove, Darryl E. Helton
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Dec 27, 1993
Inventors
Nelson David Bove
Darryl E. Helton
Assignee (at issue)
Ford Motor 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.