Granted Patent
Utility
US 5,408,976 · App. 08/235,960
Swellable adsorbent diagnostic for fuel vapor handling system
Inventor:
Sam R. Reddy
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: May 2, 1994
Inventor
Sam R. Reddy
Assignee (at issue)
General Motors 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.