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UID:0c61db38-ee73-4e8f-8102-9ddf73b923ff
X-WR-CALDESC:On 11 July 1865\, the first US patent was granted for a cipher
  device to Signal Corps Sergeant Edwin H. Hawley\, for multiple alphabetic
  device which was a fan-like set of 26 wooden tablets\, each with a differ
 ent ciphertext alphabet on it\, designed for use with a keyword. <i>Info p
 er David Kahn's book\, 'The Codebreakers.'</i>
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DTSTART:20261101T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
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RDATE:20281105T020000
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DTSTART:20270314T020000
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UID:d4f54a60-ac3c-44f4-8b28-2b6e780faf17
DTSTAMP:20260425T053230Z
DESCRIPTION:On 11 July 1865\, the first US patent was granted for a cipher 
 device to Signal Corps Sergeant Edwin H. Hawley\, for multiple alphabetic 
 device which was a fan-like set of 26 wooden tablets\, each with a differe
 nt ciphertext alphabet on it\, designed for use with a keyword. <i>Info pe
 r David Kahn's book\, 'The Codebreakers.'</i>
DTSTART;TZID=America/New_York:20270711T000000
DTEND;TZID=America/New_York:20270711T235900
LOCATION:
SUMMARY:1865: First US patent for cipher device to Edwin H. Hawley
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