Granted Patent
Utility
US 5,257,125 · App. 07/982,324
Afocal optical system for focus error correction in laser scanning systems
Inventor:
Patrick Y. Maeda
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Nov 27, 1991
Inventor
Patrick Y. Maeda
Assignee (at issue)
Xerox 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.