Granted Patent
Utility
US 5,243,241 · App. 07/494,171
Totally magnetic fine tracking miniature galvanometer actuator
Inventor:
Cheng Wang
Patented Case
View Patent ↗
Granted: Sep 7, 1993
Filed: Mar 15, 1990
Inventor
Cheng Wang
Assignee (at issue)
Digital Equipment 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.