Granted Patent
Utility
US 4,597,248 · App. 06/694,864
Method of operating a roll baler
Inventors:
Willis R. Campbell, John A. Merkey
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Jan 25, 1985
Inventors
Willis R. Campbell
John A. Merkey
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.