Granted Patent
Utility
US 4,549,246 · App. 06/626,671
Air dielectric variable capacitor utilizing a stator formed as part of the circuit layout on the substrate
Inventor:
Robert Joseph Baumler
Patented Case
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Granted: Oct 22, 1985
Filed: Jul 2, 1984
Inventor
Robert Joseph Baumler
Assignee (at issue)
E.F. Johnson 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.