Granted Patent
Utility
US 4,713,630 · App. 06/890,231
BPSK Costas-type PLL circuit having false lock prevention
Inventor:
David Matthews
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Jul 29, 1986
Inventor
David Matthews
Assignee (at issue)
Communications Satellite 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.