FR458248A - Cryptographic device - Google Patents

Cryptographic device

Info

Publication number
FR458248A
FR458248A FR458248DA FR458248A FR 458248 A FR458248 A FR 458248A FR 458248D A FR458248D A FR 458248DA FR 458248 A FR458248 A FR 458248A
Authority
FR
France
Prior art keywords
cryptographic device
cryptographic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Jose De Medeiros E Albuquerque
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOSE DE MEDEIROS E ALBUQUERQUE
Original Assignee
JOSE DE MEDEIROS E ALBUQUERQUE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JOSE DE MEDEIROS E ALBUQUERQUE filed Critical JOSE DE MEDEIROS E ALBUQUERQUE
Application granted granted Critical
Publication of FR458248A publication Critical patent/FR458248A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C3/00—Typewriters for ciphering or deciphering cryptographic text
    • G09C3/04—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
    • G09C3/06—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member the connections being mechanical

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR458248D 1913-05-22 1913-05-22 Cryptographic device Expired FR458248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR458248T 1913-05-22

Publications (1)

Publication Number Publication Date
FR458248A true FR458248A (en) 1913-10-06

Family

ID=1497861

Family Applications (1)

Application Number Title Priority Date Filing Date
FR458248D Expired FR458248A (en) 1913-05-22 1913-05-22 Cryptographic device

Country Status (1)

Country Link
FR (1) FR458248A (en)

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