Granted Patent
Utility
US 4,611,097 · App. 06/620,359
Sine wave ring generator
Inventor:
Mark W. Grimes
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Jun 13, 1984
Inventor
Mark W. Grimes
Assignee (at issue)
Rockwell International 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.