Granted Patent
Utility
US 4,322,643 · App. 06/144,053
Digital phase comparator with improved sensitivity for small phase differences
Inventor:
Donald R. Preslar
Patented Case
View Patent ↗
Granted: Mar 30, 1982
Filed: Apr 28, 1980
Inventor
Donald R. Preslar
Assignee (at issue)
RCA 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.