Granted Patent
Utility
US 4,547,738 · App. 06/503,036
Phase shift demodulator
Inventors:
Robert Bayer, Mark A. Petronaci
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Jun 10, 1983
Inventors
Robert Bayer
Mark A. Petronaci
Assignee (at issue)
American Standard Inc.
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.