Granted Patent
Utility
US 5,787,940 · App. 08/646,882
Cryogenic fluid system and method of pumping cryogenic fluid
Inventors:
John W. Bonn, Anker Gram
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: May 8, 1996
Inventors
John W. Bonn
Anker Gram
Assignee (at issue)
Process Systems International, 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.