Granted Patent
Utility
US 4,453,257 · App. 06/420,717
Spectrum shaping microwave digital modulators
Inventors:
Gerald J. P. Lo, Misel Cuhaci, N. S. Hitchcock
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Sep 21, 1982
Inventors
Gerald J. P. Lo
Misel Cuhaci
N. S. Hitchcock
Assignee (at issue)
Canadian Patents and Development Limited
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.