Granted Patent
Utility
US 4,626,796 · App. 06/707,375
Digital apparatus and method for programmably phase shifting an audio tone
Inventor:
James H. Elder
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Mar 1, 1985
Inventor
James H. Elder
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.