Granted Patent
Utility
US 6,745,791 · App. 10/133,239
Service tools for pipelines containing conduit or cable
Inventors:
Scott Beals, Ronald Hammer, Robert E. Evans
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Apr 26, 2002
Inventors
Scott Beals
Ronald Hammer
Robert E. Evans
Assignee (at issue)
Sempra Fiber Links
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.