Patent Case File No. 2,292,387, Secret Communication System, Inventors Hedy Kiesler Markey and George Antheil - - 128f022cfd9421aa10de72958a7edf90 (page 6)

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Patent Case File No. 2,292,387, Secret Communication System, Inventors Hedy Kiesler Markey and George Antheil - - 128f022cfd9421aa10de72958a7edf90 (page 6)

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