Granted Patent
Utility
US 4,767,218 · App. 07/045,821
Mixing paddle assembly
Inventors:
Joseph J. Palus, Robert E. Williams
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: May 4, 1987
Inventors
Joseph J. Palus
Robert E. Williams
Assignee (at issue)
Stoelting, LLC
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.