File:Aktiebolaget Cryptograph Catalogue 1922 model A2.jpg
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Mechano-Crypto model A 2. From the catalogue of AB Cryptograph.
Summary
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| Description |
English: Mechano-Crypto model A 2. From the catalogue of AB Cryptograph. |
| Date | |
| Source | https://cse.umn.edu/cbi/erwin-tomash-library-history-computing |
| Author | AB Cryptograph |
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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