Granted Patent
Utility
US 4,559,999 · App. 06/483,377
Heat exchanger for extracorporeal circuit
Inventors:
Frank M. Servas, John E. Lewin, Tudor Pavlov, Lambert J. Diettrich
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Apr 8, 1983
Inventors
Frank M. Servas
John E. Lewin
Tudor Pavlov
Lambert J. Diettrich
Assignee (at issue)
Shiley Incorporated
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.