Granted Patent
Utility
US 6,533,519 · App. 09/620,580
Pipe handling apparatus
Inventors:
E. Kent Tolmon, Ronald D. Jones
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Jul 20, 2000
Inventors
E. Kent Tolmon
Ronald D. Jones
Assignee (at issue)
Hydra-Walk, 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.