Granted Patent
Utility
US 6,523,581 · App. 09/874,864
Apparatus and method for minimizing vapor loss
Inventors:
David R. Pendleton, James E. Kesterman
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Jun 5, 2001
Inventors
David R. Pendleton
James E. Kesterman
Assignee (at issue)
Delaware Capital Formation, 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.