Granted Patent
Utility
US 4,336,224 · App. 06/122,779
Bubble oxygenator
Inventor:
George G. Siposs
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Feb 19, 1980
Inventor
George G. Siposs
Assignee (at issue)
Travenol Laboratories, 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.