FR2027475A1 - - Google Patents

Info

Publication number
FR2027475A1
FR2027475A1 FR6945594A FR6945594A FR2027475A1 FR 2027475 A1 FR2027475 A1 FR 2027475A1 FR 6945594 A FR6945594 A FR 6945594A FR 6945594 A FR6945594 A FR 6945594A FR 2027475 A1 FR2027475 A1 FR 2027475A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6945594A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB6199068A external-priority patent/GB1294306A/en
Priority claimed from GB600969A external-priority patent/GB1270431A/en
Priority claimed from GB6198968A external-priority patent/GB1294305A/en
Application filed by Individual filed Critical Individual
Publication of FR2027475A1 publication Critical patent/FR2027475A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/20—Arrangements for preventing acoustic feed-back
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/56—Arrangements for indicating or recording the called number at the calling subscriber's set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
FR6945594A 1968-12-31 1969-12-31 Withdrawn FR2027475A1 (enrdf_load_stackoverflow)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB6199068A GB1294306A (en) 1968-12-31 1968-12-31 A display device for use with a telephone instrument
GB245369 1969-01-15
GB600969A GB1270431A (en) 1969-02-04 1969-02-04 Improvements in or relating to electro-acoustic transducer apparatus
GB6198968A GB1294305A (en) 1969-10-24 1969-10-24 Improvements in or relating to a station for connection to a telephone system

Publications (1)

Publication Number Publication Date
FR2027475A1 true FR2027475A1 (enrdf_load_stackoverflow) 1970-09-25

Family

ID=27447228

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6945594A Withdrawn FR2027475A1 (enrdf_load_stackoverflow) 1968-12-31 1969-12-31

Country Status (2)

Country Link
DE (1) DE1965657A1 (enrdf_load_stackoverflow)
FR (1) FR2027475A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4352958A (en) * 1979-12-13 1982-10-05 Bell Telephone Laboratories, Incorporated Electronically-switched multifrequency generator with transducer control

Also Published As

Publication number Publication date
DE1965657A1 (de) 1971-04-08

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Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
ST Notification of lapse