Granted Patent
Utility
US 4,992,804 · App. 07/348,523
Modulated beam scanning with pixal exposure control
Inventor:
Malcolm D. M. Roe
Patented Case
View Patent ↗
Granted: Feb 12, 1991
Filed: May 8, 1989
Inventor
Malcolm D. M. Roe
Assignee (at issue)
Crosfield Electronics Limited
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.