NL155700B - Luidsprekende telefooninrichting. - Google Patents

Luidsprekende telefooninrichting.

Info

Publication number
NL155700B
NL155700B NL7116826A NL7116826A NL155700B NL 155700 B NL155700 B NL 155700B NL 7116826 A NL7116826 A NL 7116826A NL 7116826 A NL7116826 A NL 7116826A NL 155700 B NL155700 B NL 155700B
Authority
NL
Netherlands
Prior art keywords
telephone device
speaking telephone
speaking
telephone
Prior art date
Application number
NL7116826A
Other languages
English (en)
Dutch (nl)
Other versions
NL7116826A (xx
Inventor
Johannes Josephus Moolenaar
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Priority to NL7116826A priority Critical patent/NL155700B/xx
Priority to DE19722258415 priority patent/DE2258415C3/de
Priority to JP12195172A priority patent/JPS5331326B2/ja
Priority to NO446372A priority patent/NO133988C/no
Priority to GB5604972A priority patent/GB1367707A/en
Priority to FR7243575A priority patent/FR2164357A5/fr
Publication of NL7116826A publication Critical patent/NL7116826A/xx
Publication of NL155700B publication Critical patent/NL155700B/xx

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
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Polyamides (AREA)
  • Circuit For Audible Band Transducer (AREA)
NL7116826A 1971-12-08 1971-12-08 Luidsprekende telefooninrichting. NL155700B (nl)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL7116826A NL155700B (nl) 1971-12-08 1971-12-08 Luidsprekende telefooninrichting.
DE19722258415 DE2258415C3 (de) 1971-12-08 1972-11-29 Lautsprech Telephongerät
JP12195172A JPS5331326B2 (xx) 1971-12-08 1972-12-05
NO446372A NO133988C (xx) 1971-12-08 1972-12-05
GB5604972A GB1367707A (en) 1971-12-08 1972-12-05 Loudspeaking telephone
FR7243575A FR2164357A5 (xx) 1971-12-08 1972-12-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7116826A NL155700B (nl) 1971-12-08 1971-12-08 Luidsprekende telefooninrichting.

Publications (2)

Publication Number Publication Date
NL7116826A NL7116826A (xx) 1973-06-13
NL155700B true NL155700B (nl) 1978-01-16

Family

ID=19814643

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7116826A NL155700B (nl) 1971-12-08 1971-12-08 Luidsprekende telefooninrichting.

Country Status (6)

Country Link
JP (1) JPS5331326B2 (xx)
DE (1) DE2258415C3 (xx)
FR (1) FR2164357A5 (xx)
GB (1) GB1367707A (xx)
NL (1) NL155700B (xx)
NO (1) NO133988C (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO134477C (xx) * 1974-10-29 1976-10-13 Manus Max
JPS5824063B2 (ja) * 1977-11-14 1983-05-19 東亜特殊電機株式会社 拡声電話機
JPS5469308A (en) * 1977-11-14 1979-06-04 Toa Electric Co Ltd Audio switch
US4229625A (en) * 1978-12-29 1980-10-21 Bell Telephone Laboratories, Incorporated Repeater level control circuit
US4346261A (en) * 1980-03-17 1982-08-24 United Networks, Inc. Speaker phones
DE3034569C2 (de) * 1980-09-10 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Sprachgesteuerte Lautfernsprechanlage
DD154419A1 (de) * 1980-12-23 1982-03-17 Helmut Kammholz Schaltungsanordnung fuer einen fernsprechapparat mit mithoer-und freisprecheinrichtung
FR2578127A1 (fr) * 1985-02-27 1986-08-29 Jeumont Schneider Procede et dispositif pour la commande d'un poste telephonique a main libre fonctionnant en alternat
GB2197166A (en) * 1986-11-07 1988-05-11 Storno As Controlling gain in speech-controlled telephones
FR2610772B2 (fr) * 1987-02-10 1989-04-28 Telephonie Ind Commerciale Dispositif anti-effet larsen pour poste telephonique

Also Published As

Publication number Publication date
GB1367707A (en) 1974-09-18
FR2164357A5 (xx) 1973-07-27
DE2258415B2 (de) 1979-09-20
DE2258415A1 (de) 1973-06-14
DE2258415C3 (de) 1980-06-12
JPS5331326B2 (xx) 1978-09-01
JPS4866310A (xx) 1973-09-11
NO133988B (xx) 1976-04-20
NL7116826A (xx) 1973-06-13
NO133988C (xx) 1976-07-28

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: PHILIPS