Granted Patent
Utility
US 4,701,731 · App. 06/854,969
Pivotable conical joint for waveguides
Inventors:
Allan W. Hanson, Theron L. Christiansen
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: Apr 23, 1986
Inventors
Allan W. Hanson
Theron L. Christiansen
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.