Granted Patent
Utility
US 4,357,754 · App. 06/245,404
Apparatus for ascertaining internal dimensions of a hollow article
Inventor:
William C. Kent
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Mar 19, 1981
Inventor
William C. Kent
Assignee (at issue)
Western Electric Company, 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.