Granted Patent
Utility
US 6,402,937 · App. 09/575,598
“Pumped” recycle vapor
Inventors:
Arthur G. Shaffer, Jr., Howard F. Moore
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: May 22, 2000
Inventors
Arthur G. Shaffer, Jr.
Howard F. Moore
Assignee (at issue)
Marathon Ashland Petroleum 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.