Inventor, engineer and business man
- this page is a stub
Arvid Gerhard Damm (27 May 1869 - 7 November 1928) was a Swedish
engineer and inventor of cipher machines,
best known for his involvement with the
company AB Cryptograph,
that had been founded in 1916
by Emanuel Nobel 1 for the exploitation of his cryptographic machines .
1918Cylinder cipher (prototype only)
1919Encryptor/Transmitter (first units delivered to Swedish PTT in 1922)
Often erroneously identified as the B-18 (which never existed), for example in 
- US 1,233,035 — Apparatus for Producing a Series of Signs
Filed 21 July 1915.
- US 1,484,477 — Apparatus for Ciphering and Deciphering Code Expressions
Filed 25 March 1922.
- US 1,502,376 — Production of Ciphers
Filed 22 July 1924.
- US 1,540,107 — Apparatus for the Production of Cipher Documents Especially for Telegraphic Dispatch
Filed 1 March 1922.
- US 1,644,239 — Apparatus for Producing a Series of Signs
Filed 25 September 1924.
- US 1,663,624 — Electric Apparatus
Filed 31 August 1925.
- Hans Stadlin, 100 Jahre Boris Hagelin 1892-1992 (German)
Crypto AG. Crypto Hauszeitung Nr. 11. Jubilieumausgabe September 1992. P 40-43.
- Boris Hagelin, Die Geschichte der Hagelin-Cryptos
Original manuscript by Boris Hagelin in German language. Zug, Fall 1979.
- Boris Hagelin, The Story of Hagelin Cryptos
English translation of the above. BCW Hagelin, Zug, Spring 1981.
Later edited by David Kahn and published in Cryptologia, Volume 18, Issue 3, July 1994, pp 204-242.
- Wikipedia, Arvid Gerhard Damm
Retrieved 1 May 2020.
- Kjell-Ove Widman & Anders Wik, Damm och AB Cryptograph
FRA historiska skrifter #27. Bromma, 2017. 40 pages.
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