Granted Patent
Utility
US 6,028,503 · App. 08/963,940
Contactless data transmission and receiving device with a synchronous demodulator
Inventors:
Josef Preishuberpflugl, Siegfried Arnold, Bernhard Spiess, Hubert Watzinger
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Nov 4, 1997
Inventors
Josef Preishuberpflugl
Siegfried Arnold
Bernhard Spiess
Hubert Watzinger
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.