Granted Patent
Utility
US 4,837,571 · App. 07/101,914
Circuit arrangement for converting a data signal
Inventor:
Georg Lutz
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Sep 28, 1987
Inventor
Georg Lutz
Assignee (at issue)
U.S. Philips 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.