Granted Patent
Utility
US 4,730,753 · App. 06/453,407
Paint cup vent
Inventor:
Thomas E. Grime
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Dec 27, 1982
Inventor
Thomas E. Grime
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.