Granted Patent
Utility
US 4,291,387 · App. 06/017,664
Analog to digital conversion weighting apparatus
Inventors:
James E. Buchanan, Marshall Field
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Mar 5, 1979
Inventors
James E. Buchanan
Marshall Field
Assignee (at issue)
Westinghouse Electric Company LLC
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.