Granted Patent
Utility
US 5,486,844 · App. 08/190,731
Method and apparatus for superimposing displayed images
Inventors:
Martin Randall, Paul Campbell, Douglas J. Gilbert
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Feb 1, 1994
Inventors
Martin Randall
Paul Campbell
Douglas J. Gilbert
Assignee (at issue)
Radius Group, LLC
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.