Granted Patent
Utility
US 4,007,744 · App. 05/592,713
Grain accelerator precleaner
Inventor:
J. Lyle Shaver
Patented Case
View Patent ↗
Granted: Feb 15, 1977
Filed: Jul 2, 1975
Inventor
J. Lyle Shaver
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.