FR1144856A - Call detector - Google Patents

Call detector

Info

Publication number
FR1144856A
FR1144856A FR1144856DA FR1144856A FR 1144856 A FR1144856 A FR 1144856A FR 1144856D A FR1144856D A FR 1144856DA FR 1144856 A FR1144856 A FR 1144856A
Authority
FR
France
Prior art keywords
call detector
call
detector
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
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1144856A publication Critical patent/FR1144856A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
FR1144856D 1955-03-28 1956-03-27 Call detector Expired FR1144856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL345369X 1955-03-28

Publications (1)

Publication Number Publication Date
FR1144856A true FR1144856A (en) 1957-10-18

Family

ID=19784875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1144856D Expired FR1144856A (en) 1955-03-28 1956-03-27 Call detector

Country Status (6)

Country Link
BE (1) BE546459A (en)
CH (1) CH345369A (en)
DE (1) DE1001335B (en)
FR (1) FR1144856A (en)
GB (1) GB836583A (en)
NL (2) NL87154C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053575B (en) * 1957-09-30 1959-03-26 Siemens Ag Method and arrangement for preventing the loading of equipment by connecting an electrical dialer
NL231776A (en) * 1957-09-30
NL256763A (en) * 1959-10-16
NL271594A (en) * 1961-11-20
GB990601A (en) * 1963-02-07 1965-04-28 Ericsson Telephones Ltd Telecommunication exchange apparatus

Also Published As

Publication number Publication date
BE546459A (en)
GB836583A (en) 1960-06-09
CH345369A (en) 1960-03-31
DE1001335B (en) 1957-01-24
NL87154C (en)
NL196024A (en)

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