Granted Patent
Utility
US 4,663,544 · App. 06/712,493
High performance analog gate/absolute value circuit
Inventors:
Jay L. Flora, David Haycock
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Mar 15, 1985
Inventors
Jay L. Flora
David Haycock
Assignee (at issue)
Ampex 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.