Granted Patent
Utility
US 4,237,985 · App. 06/048,417
Track removing device
Inventor:
Heiner J. Hoefkes
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Jun 14, 1979
Inventor
Heiner J. Hoefkes
Assignee (at issue)
International Harvester 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.