Granted Patent
Utility
US 4,493,447 · App. 06/493,608
High speed article feeding apparatus
Inventor:
Harry J. Ledgerwood
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: May 11, 1983
Inventor
Harry J. Ledgerwood
Assignee (at issue)
The Plessey Company Limited
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.