Arnold Orville Beckman (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Arnold Orville Beckman" in German language version.

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espacenet.com

worldwide.espacenet.com

Patent US2058761A: Apparatus for testing acidity. Angemeldet am 12. Oktober 1934, veröffentlicht am 27. Oktober 1936, Anmelder: National Technical Laboratories, Erfinder: Arnold O. Beckmann, Henry E. Fracker.‌

google.de

books.google.de

Understanding Moore's law: four decades of innovation, von David C. Brock,Gordon E. Moore - Google Bücher. books.google.de, abgerufen am 17. Oktober 2009.