Granted Patent
Utility
US 4,249,119 · App. 05/970,806
Digital drive circuit for electric motor or the like
Inventor:
Anthony D. Robbi
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Dec 18, 1978
Inventor
Anthony D. Robbi
Assignee (at issue)
RCA 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.