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FR760543A - Steganography machine - Google Patents

Steganography machine

Info

Publication number
FR760543A
FR760543A FR760543DA FR760543A FR 760543 A FR760543 A FR 760543A FR 760543D A FR760543D A FR 760543DA FR 760543 A FR760543 A FR 760543A
Authority
FR
France
Prior art keywords
steganography
machine
steganography machine
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
Auvrain Fernand D
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 filed Critical
Application granted granted Critical
Publication of FR760543A publication Critical patent/FR760543A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D37/00—Broaching machines or broaching devices
    • B23D37/02—Broaching machines with horizontally-arranged working tools
    • B23D37/04—Broaching machines with horizontally-arranged working tools for broaching inner surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)
  • Retarders (AREA)
FR760543D 1932-08-05 1933-07-27 Steganography machine Expired FR760543A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE390250T 1932-08-05
GB11041/34A GB432596A (en) 1932-08-05 1934-04-12 Improvements in broaching machines

Publications (1)

Publication Number Publication Date
FR760543A true FR760543A (en) 1934-02-24

Family

ID=31994789

Family Applications (1)

Application Number Title Priority Date Filing Date
FR760543D Expired FR760543A (en) 1932-08-05 1933-07-27 Steganography machine

Country Status (5)

Country Link
US (1) US2058776A (en)
BE (1) BE390250A (en)
DE (1) DE670300C (en)
FR (1) FR760543A (en)
GB (1) GB432596A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487699A (en) * 1945-01-31 1949-11-08 Bohn Aluminium & Brass Corp Broaching machine
FR966872A (en) * 1947-05-30 1950-10-20 Olivetti & Co Spa Device for advancing the encryption wheels in a signal transmitting device
DE1141815B (en) * 1955-05-26 1962-12-27 Europ Handelsges Anst Switching device on encryption machines

Also Published As

Publication number Publication date
BE390250A (en) 1932-09-30
DE670300C (en) 1939-01-16
US2058776A (en) 1936-10-27
GB432596A (en) 1935-07-30

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