Granted Patent
Utility
US 6,073,849 · App. 08/961,872
Electronic edge detection system using a second derivative signal processor
Inventors:
James E. Colley, Patrick M. O'Donnell
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Oct 31, 1997
Inventors
James E. Colley
Patrick M. O'Donnell
Assignee (at issue)
PSC Scanning, 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.