Granted Patent
Utility
US 4,549,202 · App. 06/561,330
Trilevel sandcastle pulse encoding/decoding system
Inventor:
James Hettiger
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Dec 14, 1983
Inventor
James Hettiger
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.