Granted Patent
Utility
US 4,993,316 · App. 07/461,305
Seed grain conditioning apparatus
Inventor:
David Greer
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Jan 5, 1990
Inventor
David Greer
Assignee (at issue)
AGRICHEM
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.