Granted Patent
Utility
US 4,246,794 · App. 06/059,683
Apparatus and method for ultrasonic inspection of round stock such as tubing, pipe and rod
Inventors:
Harold L. Sheets, James H. Rowsey
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Jul 23, 1979
Inventors
Harold L. Sheets
James H. Rowsey
Assignee (at issue)
HUNTINGTON ALLOYS CORPORATION
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.