Granted Patent
Utility
US 6,439,258 · App. 09/914,186
Quick-close tank vent control system
Inventor:
Dennis M. DeCapua
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Aug 22, 2001
Inventor
Dennis M. DeCapua
Assignee (at issue)
Stant Manufacturing 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.