Granted Patent
Utility
US 5,747,752 · App. 08/792,582
Stethoscope with disposable chestpiece
Inventor:
Irwin Selinger
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Jan 30, 1997
Inventor
Irwin Selinger
Assignee (at issue)
Graham-Field, 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.