Granted Patent
Utility
US 4,426,043 · App. 06/349,436
Forage harvester drive apparatus
Inventor:
Wayne B. Martenas
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Feb 16, 1982
Inventor
Wayne B. Martenas
Assignee (at issue)
Sperry Corp.
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.