Granted Patent
Utility
US 4,942,538 · App. 07/315,260
Telerobotic tracker
Inventors:
Joseph Yuan, Richard A. MacDonald, Felix H. N. Keung
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Feb 23, 1989
Inventors
Joseph Yuan
Richard A. MacDonald
Felix H. N. Keung
Assignee (at issue)
Spar Aerospace Limited
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.