Granted Patent
Utility
US 4,556,964 · App. 06/332,500
Technique for monitoring galvo angle
Inventor:
Paul M. Trethewey
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: Dec 21, 1981
Inventor
Paul M. Trethewey
Assignee (at issue)
Burroughs, 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.