Granted Patent
Utility
US 5,202,678 · App. 03/793,212
Recognition unit
Inventors:
John E. Taber, Bernard H. Dell
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Feb 13, 1959
Inventors
John E. Taber
Bernard H. Dell
Assignee (at issue)
AIL Systems, 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.