Arvid Gerhard Damm
Arvid Gerhard Damm (7 August 1869 – 7 November 1928) was a Swedish engineer and inventor. He designed a number of cipher machines, and was one of the early inventors of the wired rotor principle for machine encipherment. The company, AB Cryptograph, was an early predecessor of Crypto AG. Provided by Wikipedia
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Published: [2022]
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