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• 04:55, 31 August 2021 Peter talk contribs deleted page Patent US 4084187 (content was: "{{Patent |Office=US |Number=4084187 |Title=Circuit for accurately extracting the synchronization information contained within a composite video waveform |Inventors=Ken Schlotzhauer;Stephen Anthony Roth |Company=Tektronix Inc |Filing date=1976-09-07 |Grant date=1978-04-11 |Cites= }}", and the only contributor was "Peter" (talk))