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- M-325 abstract "In the history of cryptography, M-325, also known as SIGFOY, was an American rotor machine designed by William F. Friedman in 1936. Between 1944 and 1946, more than 1,100 machines were deployed within the United States Foreign Service. Its use was discontinued in 1946 because of faults in operation. Friedman applied for a patent on the M-325 on 11 August 1944; it was granted on 17 March 1959 (US patent #2,877,565).Like the Enigma, the M-325 contains three intermediate rotors and a reflecting rotor.".
- M-325 thumbnail Sigfoy2004a-1.jpg?width=300.
- M-325 wikiPageExternalLink m-325-manual.html.
- M-325 wikiPageExternalLink m325.html.
- M-325 wikiPageID "1223019".
- M-325 wikiPageRevisionID "543895589".
- M-325 hasPhotoCollection M-325.
- M-325 subject Category:Military_electronics_of_the_United_States.
- M-325 subject Category:Military_radio_systems.
- M-325 subject Category:Rotor_machines.
- M-325 subject Category:World_War_II_American_electronics.
- M-325 comment "In the history of cryptography, M-325, also known as SIGFOY, was an American rotor machine designed by William F. Friedman in 1936. Between 1944 and 1946, more than 1,100 machines were deployed within the United States Foreign Service. Its use was discontinued in 1946 because of faults in operation.".
- M-325 label "M-325".
- M-325 label "M-325".
- M-325 label "M-325".
- M-325 sameAs M-325.
- M-325 sameAs M-325.
- M-325 sameAs m.04jtl_.
- M-325 sameAs Q605681.
- M-325 sameAs Q605681.
- M-325 wasDerivedFrom M-325?oldid=543895589.
- M-325 depiction Sigfoy2004a-1.jpg.
- M-325 isPrimaryTopicOf M-325.