Granted Patent
Utility
US 6,119,729 · App. 09/152,197
Freeze protection apparatus for fluid transport passages
Inventors:
Johannes-Ulrich Oberholzer, David Elzinga, Ian MacLellan, David W. Mather
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Sep 14, 1998
Inventors
Johannes-Ulrich Oberholzer
David Elzinga
Ian MacLellan
David W. Mather
Assignee (at issue)
Arise Technologies Corporation
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.