Granted Patent
Utility
US 5,224,994 · App. 07/641,437
Apparatus and method for liquid treatment of article surfaces
Inventor:
Richard K. Daly
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Jan 15, 1991
Inventor
Richard K. Daly
Assignee (at issue)
Westinghouse Air Brake Co.
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.