Granted Patent
Utility
US 4,418,349 · App. 06/248,877
Airport surveillance system
Inventors:
Gunter Hofgen, Heinz L. Cohrs
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Mar 30, 1981
Inventors
Gunter Hofgen
Heinz L. Cohrs
Assignee (at issue)
International Standard Electric 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.