Granted Patent
Utility
US 5,654,795 · App. 08/467,271
Internal visual weld inspection apparatus
Inventor:
Oliver T. Dierlam
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Jun 6, 1995
Inventor
Oliver T. Dierlam
Assignee (at issue)
CRC-EVANS PIPELINE INTERNATIONAL, 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.