Granted Patent
Utility
US 4,896,483 · App. 07/297,945
Hay conditioner roll tensioning mechanism
Inventors:
Michael L. O'Halloran, Martin E. Pruitt
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Jan 17, 1989
Inventors
Michael L. O'Halloran
Martin E. Pruitt
Assignee (at issue)
Hay & Forage Industries
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.