Granted Patent
Utility
US 4,535,249 · App. 06/505,564
Benchmark detector
Inventor:
John W. Reeds
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Jun 17, 1983
Inventor
John W. Reeds
Assignee (at issue)
Hughes Aircraft Company
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.