The Enigma machine: ce← Previous revisionRevision as of 17:36, 10 October 2026 Line 33: Line 33: The first civilian model—the commercial machine (pictured)—was very large, weighed approximately 50 kg, and resembled a cash register. The subsequent models A, B, and C continued the line of lamp-based machines established by the prototypes. Weighing 12 kg, these were portable and resembled a typewriter housed in a wooden case measuring 34 × 28 × 15 centimeters. In November 1921, Scherbius transferred his rights to the Berlin-based firm Gewerkschaft Securitas, which was subsequently granted patent DRP 416219 for a "cipher apparatus" in 1925.{{cite web |title=DE416219C Chiffrierapparat |url=https://worldwide.espacenet.com/patent/search/family/007436757/publication/DE416219C?q=pn%3DDE416219C |website=European Patent Office |access-date=10 October 2026 |location=Munich |language=de}} The first civilian model—the commercial machine (pictured)—was very large, weighed approximately 50 kg, and resembled a cash register. The subsequent models A, B, and C continued the line of lamp-based machines established by the prototypes. Weighing 12 kg, these were portable and resembled a typewriter housed in a wooden case measuring 34 × 28 × 15 centimeters. In November 1921, Scherbius transferred his rights to the Berlin-based firm Gewerkschaft Securitas, which was subsequently granted patent DRP 416219 for a "cipher apparatus" in 1925.{{cite web |title=DE416219C Chiffrierapparat |url=https://worldwide.espacenet.com/patent/search/family/007436757/publication/DE416219C?q=pn%3DDE416219C |website=European Patent Office |access-date=10 October 2026 |location=Munich |language=de}} On July 9, 1923, the company—together with several investors—founded Chiffriermaschinen-Aktiengesellschaft (Chiffriermaschinen AG) in Berlin (W 35, Steglitzer Str. 2; today Pohlstraße, Berlin-Tiergarten).{{cite journal |last1=Kruh |first1=Louis |last2=Deavours |first2=Cipher |title=The Commercial Enigma: Beginnings Of Machine Cryptography |journal=Cryptologia |date=January 2002 |volume=26 |issue=1 |pages=1–16 |doi=10.1080/0161-110291890731}} {{ill|Paul Bernstein|de|Paul Bernstein (Kryptologe)}} served as a development engineer at the firm until 1925. Scherbius also served on the board of ChiMaAG for a time after 1925. On 9 July 1923, the company—together with several investors—founded Chiffriermaschinen-Aktiengesellschaft (Chiffriermaschinen AG) in Berlin (W 35, Steglitzer Str. 2; today Pohlstraße, Berlin-Tiergarten).{{cite journal |last1=Kruh |first1=Louis |last2=Deavours |first2=Cipher |title=The Commercial Enigma: Beginnings Of Machine Cryptography |journal=Cryptologia |date=January 2002 |volume=26 |issue=1 |pages=1–16 |doi=10.1080/0161-110291890731}} {{ill|Paul Bernstein|de|Paul Bernstein (Kryptologe)}} served as a development engineer at the firm until 1925. Scherbius also served on the board of ChiMaAG for a time after 1925.