Granted Patent
Utility
US 6,571,636 · App. 09/661,599
Wheel-type transmit/receive ultrasonic inspection device with constant length internal liquid soundpath
Inventor:
Paul McWhorter
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Sep 14, 2000
Inventor
Paul McWhorter
Assignee (at issue)
CF&I STEEL L.P.
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.