Granted Patent
Utility
US 5,090,458 · App. 07/531,735
Cleaning apparatus and method
Inventor:
Richard F. Creeron
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: May 24, 1990
Inventor
Richard F. Creeron
Assignee (at issue)
First Brands 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.