Granted Patent
Utility
US 4,964,489 · App. 07/286,975
Jet spray slinger
Inventor:
Ajitkumar G. Patel
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Dec 20, 1988
Inventor
Ajitkumar G. Patel
Assignee (at issue)
Dresser Industries, 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.