Granted Patent
Utility
US 5,592,236 · App. 08/457,560
Method and apparatus for overlaying two video signals using an input-lock
Inventors:
Fred A. Rosenbaum, Paul S. Yosim
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Jun 1, 1995
Inventors
Fred A. Rosenbaum
Paul S. Yosim
Assignee (at issue)
International Business Machines 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.