Granted Patent
Utility
US 4,328,869 · App. 06/235,279
Implement with wing lift including toggle links and roller
Inventor:
Marvin P. Perelli
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Feb 17, 1981
Inventor
Marvin P. Perelli
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.