Granted Patent
Utility
US 4,623,778 · App. 06/597,612
Optical tracker control system
Inventors:
Richard A. Cullen, Thomas S. Thorvick
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Apr 6, 1984
Inventors
Richard A. Cullen
Thomas S. Thorvick
Assignee (at issue)
Cyclomatic Industries, Inc.
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.