Granted Patent
Utility
US 6,398,457 · App. 09/846,014
Pipe weld alignment system and method of operation
Inventor:
Benton Frederick Baugh
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Apr 30, 2001
Inventor
Benton Frederick Baugh
Assignee (at issue)
OIL STATES INDUSTRIES, 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.