Granted Patent
Utility
US 5,282,992 · App. 07/864,712
Lubricating metal cleaner additive
Inventor:
David W. Reichgott
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Apr 7, 1992
Inventor
David W. Reichgott
Assignee (at issue)
Betz Laboratories, Inc.
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.