Granted Patent
Utility
US 4,968,970 · App. 07/343,202
Method of and system for power line carrier communications
Inventor:
Eric Laporte
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Apr 26, 1989
Inventor
Eric Laporte
Assignee (at issue)
Schlumberger Industires, S.A.
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.