Granted Patent
Utility
US 4,399,469 · App. 06/142,974
Imaging system and method with improved boundary detection
Inventor:
Yung Lew
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Apr 23, 1980
Inventor
Yung Lew
Assignee (at issue)
American Hoechst 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.