Granted Patent
Utility
US 5,240,027 · App. 07/998,562
Combination relief vent and closure apparatus
Inventor:
Mark W. Vertanen
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Dec 30, 1992
Inventor
Mark W. Vertanen
Assignee (at issue)
Gits Manufacturing Company, LLC
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.