Granted Patent
Utility
US 4,528,490 · App. 06/407,024
Two axis drive for stage
Inventor:
Siegfried Hansen
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Aug 11, 1982
Inventor
Siegfried Hansen
Assignee (at issue)
Hughes Aircraft Company
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.