Granted Patent
Utility
US 4,334,152 · App. 06/100,144
Position indicating systems
Inventors:
John P. Dakin, David A. Kahn
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Dec 4, 1979
Inventors
John P. Dakin
David A. Kahn
Assignee (at issue)
The Plessey Company Limited
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.