Granted Patent
Utility
US 4,602,240 · App. 06/592,139
Apparatus for and method of attenuating power line carrier communication signals passing between substation distribution lines and transmission lines through substation transformers
Inventors:
William C. Perkins, Keh-Wen Whang
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: Mar 22, 1984
Inventors
William C. Perkins
Keh-Wen Whang
Assignee (at issue)
General Electric Company
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.