Granted Patent
Utility
US 4,636,773 · App. 06/801,539
Binarily weighted pulse width digital-to-analog converter
Inventors:
Dan Lewis, James Gundersen
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 25, 1985
Inventors
Dan Lewis
James Gundersen
Assignee (at issue)
Hughes Aircraft 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.