Granted Patent
Utility
US 4,466,068 · App. 06/232,049
Apparatus for the detection and prevention of collision risks in deep sea and coastal navigation
Inventors:
Thomas Degre, Francois Lefevre, Xavier Lefevre
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Jan 26, 1981
Inventors
Thomas Degre
Francois Lefevre
Xavier Lefevre
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.