FR2211170A5 - - Google Patents

Info

Publication number
FR2211170A5
FR2211170A5 FR7244787A FR7244787A FR2211170A5 FR 2211170 A5 FR2211170 A5 FR 2211170A5 FR 7244787 A FR7244787 A FR 7244787A FR 7244787 A FR7244787 A FR 7244787A FR 2211170 A5 FR2211170 A5 FR 2211170A5
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.)
Expired
Application number
FR7244787A
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.)
GIRARD J PHILIPPE
Original Assignee
GIRARD J PHILIPPE
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 GIRARD J PHILIPPE filed Critical GIRARD J PHILIPPE
Priority to FR7244787A priority Critical patent/FR2211170A5/fr
Application granted granted Critical
Publication of FR2211170A5 publication Critical patent/FR2211170A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/087—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using different frequency bands for transmitting and receiving paths ; using phase shifting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR7244787A 1972-12-15 1972-12-15 Expired FR2211170A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7244787A FR2211170A5 (en) 1972-12-15 1972-12-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7244787A FR2211170A5 (en) 1972-12-15 1972-12-15

Publications (1)

Publication Number Publication Date
FR2211170A5 true FR2211170A5 (en) 1974-07-12

Family

ID=9108781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7244787A Expired FR2211170A5 (en) 1972-12-15 1972-12-15

Country Status (1)

Country Link
FR (1) FR2211170A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155740A2 (en) * 1984-03-21 1985-09-25 Philips Electronics Uk Limited Loudspeaking telephone instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155740A2 (en) * 1984-03-21 1985-09-25 Philips Electronics Uk Limited Loudspeaking telephone instrument
EP0155740A3 (en) * 1984-03-21 1986-07-16 Philips Electronics Uk Limited Loudspeaking telephone instrument

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Legal Events

Date Code Title Description
ST Notification of lapse