Granted Patent
Utility
US 4,877,152 · App. 07/308,558
Fuel tank vent
Inventor:
Warwick M. Whitley, II
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Feb 10, 1989
Inventor
Warwick M. Whitley, II
Assignee (at issue)
Attwood Corporation
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.