Granted Patent
Utility
US 6,164,113 · App. 09/524,875
Variable-speed pipe bending
Inventor:
Billy J. Parker
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Mar 14, 2000
Inventor
Billy J. Parker
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.