Granted Patent
Utility
US 4,263,539 · App. 05/839,252
Automatic antenna positioning apparatus
Inventor:
Stephen Barton
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Oct 4, 1977
Inventor
Stephen Barton
Assignee (at issue)
Zenith Radio Corporation
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.