Granted Patent
Utility
US 4,349,153 · App. 06/173,412
Spray nozzle
Inventor:
Michael F. Johnson
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: Jul 29, 1980
Inventor
Michael F. Johnson
Assignee (at issue)
Champion Spark Plug 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.