Granted Patent
Utility
US 6,014,864 · App. 09/039,443
Cryogenic fluid heat exchanger method and apparatus
Inventor:
Donald R. Owen
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Mar 16, 1998
Inventor
Donald R. Owen
Assignee (at issue)
Life Sciences, 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.