Granted Patent
Utility
US 4,406,009 · App. 06/034,320
Method and apparatus for converting binary information into a single-sideband 3-level correlative signal
Inventor:
Adam Lender
Patented Case
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Granted: Sep 20, 1983
Filed: Apr 30, 1979
Inventor
Adam Lender
Assignee (at issue)
GTE Automatic Electric Incorporated
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.