Granted Patent
Utility
US 5,345,752 · App. 08/062,805
Impeller plates for rotary cutting units of a crop harvester
Inventors:
Martin E. Pruitt, Cecil L. Case, H. Keith Garrison
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: May 11, 1993
Inventors
Martin E. Pruitt
Cecil L. Case
H. Keith Garrison
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.