Granted Patent
Utility
US 5,365,331 · App. 08/009,779
Self centering device for borescopes
Inventors:
Richard A. Tamburrino, Alan S. Knieriem, Roger W. Leseberg, Timothy J. Smith
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Jan 27, 1993
Inventors
Richard A. Tamburrino
Alan S. Knieriem
Roger W. Leseberg
Timothy J. Smith
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.