Granted Patent
Utility
US 4,253,101 · App. 06/107,397
Power transfer ripple reduction method and means for rotary annular loop RF coupler
Inventor:
John C. Parr
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Dec 26, 1979
Inventor
John C. Parr
Assignee (at issue)
International Telephone and Telegraph Corporation
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.