Granted Patent
Utility
US 4,333,686 · App. 06/157,959
Road planer device with auxiliary outrigger depth control wheels
Inventor:
Jeffrey K. Arnswald
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Jun 9, 1980
Inventor
Jeffrey K. Arnswald
Assignee (at issue)
Federal-Mogul LLC
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.