Granted Patent
Utility
US 4,241,849 · App. 06/036,667
Air cut-off pad for an air planter with seed discharge feature
Inventor:
Paul H. Harrer
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: May 7, 1979
Inventor
Paul H. Harrer
Assignee (at issue)
Allis-Chalmers Corporation
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.