Granted Patent
Utility
US 4,372,103 · App. 06/209,781
Combine drive belt shielding
Inventors:
Irwin D. McIlwain, James W. McDuffie
Patented Case
View Patent ↗
Granted: Feb 8, 1983
Filed: Nov 24, 1980
Inventors
Irwin D. McIlwain
James W. McDuffie
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.