NL260795A - - Google Patents

Info

Publication number
NL260795A
NL260795A NL260795DA NL260795A NL 260795 A NL260795 A NL 260795A NL 260795D A NL260795D A NL 260795DA NL 260795 A NL260795 A NL 260795A
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 NL260795A publication Critical patent/NL260795A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/68—Circuit arrangements for preventing eavesdropping

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
NL260795D 1960-11-05 NL260795A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET19238A DE1195816B (de) 1960-11-05 1960-11-05 Schaltungsanordnung fuer einen mikrofoniearmen Teilnehmerapparat

Publications (1)

Publication Number Publication Date
NL260795A true NL260795A (enrdf_load_html_response)

Family

ID=7549244

Family Applications (1)

Application Number Title Priority Date Filing Date
NL260795D NL260795A (enrdf_load_html_response) 1960-11-05

Country Status (3)

Country Link
DE (1) DE1195816B (enrdf_load_html_response)
GB (1) GB907374A (enrdf_load_html_response)
NL (1) NL260795A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278526B (de) * 1963-08-31 1968-09-26 Standard Elektrik Lorenz Ag Schaltungsanordnung zur Verhinderung des Abhoerens von Gespraechen ueber einen anrufbereiten Fernsprechapparat
US3997737A (en) * 1974-11-27 1976-12-14 San/Bar Corporation Security line card circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110233B (de) * 1959-02-10 1961-07-06 Siemens Ag Schaltungsanordnung zur Verhinderung des Abhoerens von Gespraechen

Also Published As

Publication number Publication date
GB907374A (en) 1962-10-03
DE1195816B (de) 1965-07-01

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