FR881537A - Systèmes de téléphonie automatiques, semi-automatiques ou similaires - Google Patents

Systèmes de téléphonie automatiques, semi-automatiques ou similaires

Info

Publication number
FR881537A
FR881537A FR881537DA FR881537A FR 881537 A FR881537 A FR 881537A FR 881537D A FR881537D A FR 881537DA FR 881537 A FR881537 A FR 881537A
Authority
FR
France
Prior art keywords
automatic
semi
telephone systems
similar telephone
similar
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
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR881537A publication Critical patent/FR881537A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR881537D 1941-04-25 1942-04-25 Systèmes de téléphonie automatiques, semi-automatiques ou similaires Expired FR881537A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL252927X 1941-04-25

Publications (1)

Publication Number Publication Date
FR881537A true FR881537A (fr) 1943-04-28

Family

ID=19781183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR881537D Expired FR881537A (fr) 1941-04-25 1942-04-25 Systèmes de téléphonie automatiques, semi-automatiques ou similaires

Country Status (4)

Country Link
US (1) US2454770A (fr)
CH (1) CH252927A (fr)
FR (1) FR881537A (fr)
NL (1) NL58889C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL58889C (fr) * 1941-04-25
BE473455A (fr) * 1946-07-25
US2554149A (en) * 1948-07-08 1951-05-22 Bell Telephone Labor Inc Translator for calling line identification
US2604540A (en) * 1949-09-13 1952-07-22 Bell Telephone Labor Inc Calling line identification for automatic ticketing systems
US2875092A (en) * 1956-04-20 1959-02-24 Du Pont Process for chemically bonding a coating to an organic polymer substrate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1846516A (en) * 1931-06-05 1932-02-23 American Telephone & Telegraph Telephone system
USRE23388E (en) * 1940-09-20 1951-07-10 Line identification circuit for
US2284870A (en) * 1940-09-20 1942-06-02 Bell Telephone Labor Inc Telephone system
NL58889C (fr) * 1941-04-25

Also Published As

Publication number Publication date
CH252927A (de) 1948-01-31
NL58889C (fr)
US2454770A (en) 1948-11-30

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