Granted Patent
Utility
US 4,451,197 · App. 06/401,936
Object detection apparatus and method
Inventor:
Bradley N. Lange
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Jul 26, 1982
Inventor
Bradley N. Lange
Assignee (at issue)
Advanced Semiconductor Materials Die Bonding, 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.