Granted Patent
Utility
US 4,679,570 · App. 06/670,854
Phonocardioscope with a liquid crystal display
Inventors:
Walter W. Lund, Jr., Lou Berman, Felix Dothan
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Nov 13, 1984
Inventors
Walter W. Lund, Jr.
Lou Berman
Felix Dothan
Assignee (at issue)
Phonocardioscope Partners
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.