Granted Patent
Utility
US 5,140,975 · App. 07/657,741
Insertion tube assembly for probe with biased bending neck
Inventor:
Allan I. Krauter
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Feb 15, 1991
Inventor
Allan I. Krauter
Assignee (at issue)
Welch Allyn, 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.