Granted Patent
Utility
US 4,830,172 · App. 07/110,608
Rotary feeder
Inventor:
Sydney Hilton
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Oct 20, 1987
Inventor
Sydney Hilton
Assignee (at issue)
FMC 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.