GB586310A - Improvements in and relating to a device for limiting the calling possibilities of a telephone set - Google Patents

Improvements in and relating to a device for limiting the calling possibilities of a telephone set

Info

Publication number
GB586310A
GB586310A GB19509/43A GB1950943A GB586310A GB 586310 A GB586310 A GB 586310A GB 19509/43 A GB19509/43 A GB 19509/43A GB 1950943 A GB1950943 A GB 1950943A GB 586310 A GB586310 A GB 586310A
Authority
GB
United Kingdom
Prior art keywords
digit
shaft
switch
cam
dial
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
GB19509/43A
Other languages
English (en)
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.)
Societe des Compteurs de Geneve SODECO
Original Assignee
Societe des Compteurs de Geneve SODECO
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 Societe des Compteurs de Geneve SODECO filed Critical Societe des Compteurs de Geneve SODECO
Publication of GB586310A publication Critical patent/GB586310A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Transmission Devices (AREA)
  • Mobile Radio Communication Systems (AREA)
GB19509/43A 1942-11-18 1943-11-22 Improvements in and relating to a device for limiting the calling possibilities of a telephone set Expired GB586310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH586310X 1942-11-18

Publications (1)

Publication Number Publication Date
GB586310A true GB586310A (en) 1947-03-14

Family

ID=4521825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19509/43A Expired GB586310A (en) 1942-11-18 1943-11-22 Improvements in and relating to a device for limiting the calling possibilities of a telephone set

Country Status (3)

Country Link
CH (1) CH233996A (de)
DE (1) DE878226C (de)
GB (1) GB586310A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067482B (de) * 1958-11-14 1959-10-22 Arnstadt Fernmeldewerk Anordnung fuer Sperrnummernschalter in Muenzfernsprechern

Also Published As

Publication number Publication date
DE878226C (de) 1953-06-01
CH233996A (fr) 1944-08-31

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