NL36070C - - Google Patents

Info

Publication number
NL36070C
NL36070C NL36070DA NL36070C NL 36070 C NL36070 C NL 36070C NL 36070D A NL36070D A NL 36070DA NL 36070 C NL36070 C NL 36070C
Authority
NL
Netherlands
Application number
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.)
Publication of NL36070C publication Critical patent/NL36070C/xx

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)
  • Switch Cases, Indication, And Locking (AREA)
  • Transmission Devices (AREA)
  • Transmitters (AREA)
NL36070D 1931-04-13 NL36070C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE383166X 1931-04-13
DEF72077D DE641077C (de) 1931-04-13 1931-10-23 Nummernschalter fuer Selbstanschlussanlagen mit mechanischer Verhinderung der Stromstossgabe nach Wahl bestimmter Ziffern

Publications (1)

Publication Number Publication Date
NL36070C true NL36070C (zh)

Family

ID=25872302

Family Applications (1)

Application Number Title Priority Date Filing Date
NL36070D NL36070C (zh) 1931-04-13

Country Status (3)

Country Link
DE (1) DE641077C (zh)
GB (2) GB383166A (zh)
NL (1) NL36070C (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005761B (de) * 1951-12-12 1957-04-04 Askania Werke Ag Vorrichtung zur fortlaufenden Bestimmung des Feuchtigkeitsgehaltes von durch eine Luft-Trockenanlage laufenden Stoffen, insbesondere Stoffbahnen
US3284578A (en) * 1963-02-11 1966-11-08 Earl R Evans Direct-dialing long-distance telephone systems
DE1901692A1 (de) * 1969-01-15 1970-08-13 Standard Elek K Lorenz Ag Anordnung zur Steuerung des Verbindungsaufbaues in Fernmelde-,insbesondere Fernsprechanlagen von einem Muenzfernsprechapparat

Also Published As

Publication number Publication date
GB389661A (en) 1933-03-23
GB383166A (en) 1932-11-10
DE641077C (de) 1937-01-19

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