Granted Patent
Utility
US 4,424,516 · App. 06/334,230
Around-the-mast rotary coupler with individual power module excitation
Inventors:
Bradford E. Kruger, John C. Parr
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Dec 24, 1981
Inventors
Bradford E. Kruger
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.