Granted Patent
Utility
US 5,253,267 · App. 07/909,164
Laser multiple feedback control circuit and method
Inventor:
Keith William Johnson
Patented Case
View Patent ↗
Granted: Oct 12, 1993
Filed: Jul 6, 1992
Inventor
Keith William Johnson
Assignee (at issue)
Amoco 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.