BE446385A - - Google Patents

Info

Publication number
BE446385A
BE446385A BE446385DA BE446385A BE 446385 A BE446385 A BE 446385A BE 446385D A BE446385D A BE 446385DA BE 446385 A BE446385 A BE 446385A
Authority
BE
Belgium
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 BE446385A publication Critical patent/BE446385A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
BE446385D 1941-08-06 BE446385A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH225078T 1941-08-06

Publications (1)

Publication Number Publication Date
BE446385A true BE446385A (enrdf_load_html_response)

Family

ID=4453849

Family Applications (1)

Application Number Title Priority Date Filing Date
BE446385D BE446385A (enrdf_load_html_response) 1941-08-06

Country Status (2)

Country Link
BE (1) BE446385A (enrdf_load_html_response)
CH (1) CH225078A (enrdf_load_html_response)

Also Published As

Publication number Publication date
CH225078A (fr) 1942-12-31

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