Granted Patent
Utility
US 4,597,888 · App. 06/746,430
Cleaner for steel cans
Inventor:
Peter F. King
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Jun 19, 1985
Inventor
Peter F. King
Assignee (at issue)
Parker Chemical Company
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.