FR699759A - Machine à écrire perfectionnée - Google Patents

Machine à écrire perfectionnée

Info

Publication number
FR699759A
FR699759A FR699759DA FR699759A FR 699759 A FR699759 A FR 699759A FR 699759D A FR699759D A FR 699759DA FR 699759 A FR699759 A FR 699759A
Authority
FR
France
Prior art keywords
typewriter
advanced
advanced typewriter
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
English (en)
Inventor
Gaston-Edward Wilkinson
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 FR699759A publication Critical patent/FR699759A/fr
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)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Handling Of Sheets (AREA)
  • Input From Keyboards Or The Like (AREA)
FR699759D 1930-03-29 1930-07-30 Machine à écrire perfectionnée Expired FR699759A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB708928X 1930-03-29

Publications (1)

Publication Number Publication Date
FR699759A true FR699759A (fr) 1931-02-19

Family

ID=10494207

Family Applications (2)

Application Number Title Priority Date Filing Date
FR699759D Expired FR699759A (fr) 1930-03-29 1930-07-30 Machine à écrire perfectionnée
FR708928D Expired FR708928A (fr) 1930-03-29 1931-01-07 Perfectionnements aux machines à écrire cryptographiques

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR708928D Expired FR708928A (fr) 1930-03-29 1931-01-07 Perfectionnements aux machines à écrire cryptographiques

Country Status (4)

Country Link
BE (1) BE378566A (fr)
DE (1) DE568789C (fr)
FR (2) FR699759A (fr)
GB (1) GB381267A (fr)

Also Published As

Publication number Publication date
DE568789C (de) 1933-01-25
BE378566A (fr) 1931-04-30
GB381267A (en) 1932-10-06
FR708928A (fr) 1931-07-30

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