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Die große Enzyklopädie des mechanischen Rechnens

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Search results for: Brown, George Lawton


 
  • Patent:GB119113 26.09.1918 Brown, George Lawton (P) und Wheeler, Arthur Dickinson (P) : Improvements in or relating to Card-index and like Filing Appliances.
  • Patent:GB154336 27.11.1920 Brown, George Lawton (P) : Improvements in and relating to card index systems

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