Granted Patent
Utility
US 6,640,556 · App. 09/955,825
Method and apparatus for pumping a cryogenic fluid from a storage tank
Inventors:
Mihai Ursan, Anker Gram
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Sep 19, 2001
Inventors
Mihai Ursan
Anker Gram
Assignee (at issue)
Westport Research 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.