Granted Patent
Utility
US 4,293,833 · App. 06/090,233
Millimeter wave transmission line using thallium bromo-iodide fiber
Inventor:
Adrian E. Popa
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Nov 1, 1979
Inventor
Adrian E. Popa
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.