Granted Patent
Utility
US 4,385,484 · App. 06/294,589
Pivotable shields for disc mower-conditioner
Inventors:
Philip J. Ehrhart, Peter P. Haldeman
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Aug 20, 1981
Inventors
Philip J. Ehrhart
Peter P. Haldeman
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.