Granted Patent
Utility
US 6,425,264 · App. 09/930,199
Cryogenic refrigeration system
Inventors:
Kenneth Kai Wong, Richard A. Novak, Michael John Sinicropi, Dante Patrick Bonaquist
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: Aug 16, 2001
Inventors
Kenneth Kai Wong
Richard A. Novak
Michael John Sinicropi
Dante Patrick Bonaquist
Assignee (at issue)
Praxair Technology, 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.