Granted Patent
Utility
US 5,164,826 · App. 07/747,044
Method and apparatus for visual inspection of the internal structure of apparatus through internal passages
Inventor:
George F. Dailey
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Aug 19, 1991
Inventor
George F. Dailey
Assignee (at issue)
Westinghouse Electric Company LLC
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.