Granted Patent
Utility
US 5,163,714 · App. 07/784,627
Electronically-nonconducting system for the connection of metal tubular elements, especially suitable for use as an antenna framework located at great depth
Inventor:
Olivier Issenmann
Patented Case
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Granted: Nov 17, 1992
Filed: Oct 31, 1991
Inventor
Olivier Issenmann
Assignee (at issue)
Geoservices
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.