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• 13:53, 25 August 2021 Peter talk contribs created page Patent CA 1038440A (Created page with "{{Patent |Office=CA |Number=1038440A |Title=Dual-beam crt |Inventors=Conrad Odenthal |Company=Tektronix Inc |Filing date=1977-09-22 |Grant date=1978-09-12 |Cites= }}")