Granted Patent
Utility
US 6,817,408 · App. 10/010,269
Heat exchanger with integral internal temperature sensor
Inventors:
James Richard Lines, Alan Smith, Lawrence Michael Saupe, Lance L. Frens
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Dec 6, 2001
Inventors
James Richard Lines
Alan Smith
Lawrence Michael Saupe
Lance L. Frens
Assignee (at issue)
Graham Holdings Company
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.