Granted Patent
Utility
US 4,644,146 · App. 06/778,593
Robotic vehicle optical guidance system
Inventor:
Walter H. Wurster
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Sep 20, 1985
Inventor
Walter H. Wurster
Assignee (at issue)
Calspan 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.