Granted Patent
Utility
US 5,165,445 · App. 07/748,003
Relief vent apparatus
Inventor:
Mark W. Vertanen
Patented Case
View Patent ↗
Granted: Nov 24, 1992
Filed: Aug 21, 1991
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.