Granted Patent
Utility
US 6,234,025 · App. 09/280,411
Ultrasonic inspection apparatus and method using a focused wave device
Inventors:
John H. Gieske, Dennis P. Roach, Phillip D. Walkington
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Mar 29, 1999
Inventors
John H. Gieske
Dennis P. Roach
Phillip D. Walkington
Assignee (at issue)
Sandia 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.