NL7402575A - Elektronisch telefoontoestel. - Google Patents

Elektronisch telefoontoestel.

Info

Publication number: NL7402575A
Authority: NL; Netherlands
Prior art keywords: telephone set; electronic telephone; electronic; telephone
Prior art date: 1974-02-26

Application number

NL7402575A

Other languages

English (en)

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.)

1974-02-26

Filing date

1974-02-26

Publication date

1975-08-28

1974-02-26 Application filed by Philips Nv filed Critical Philips Nv

1974-02-26 Priority to NL7402575A priority Critical patent/NL7402575A/nl

1975-02-11 Priority to US05/548,997 priority patent/US3973082A/en

1975-02-13 Priority to DE2505957A priority patent/DE2505957C3/de

1975-02-21 Priority to DK67875AA priority patent/DK142827B/da

1975-02-21 Priority to CA220,566A priority patent/CA1017087A/en

1975-02-21 Priority to GB735675A priority patent/GB1454157A/en

1975-02-22 Priority to JP2235975A priority patent/JPS5429326B2/ja

1975-02-24 Priority to SE7502006A priority patent/SE392557B/xx

1975-02-24 Priority to BE153666A priority patent/BE825894A/xx

1975-02-26 Priority to FR7506017A priority patent/FR2262455A1/fr

1975-08-28 Publication of NL7402575A publication Critical patent/NL7402575A/nl

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)
Devices For Supply Of Signal Current (AREA)

NL7402575A 1974-02-26 1974-02-26 Elektronisch telefoontoestel. NL7402575A (nl)

Priority Applications (10)

Application Number	Priority Date	Filing Date	Title
NL7402575A NL7402575A (nl)	1974-02-26	1974-02-26	Elektronisch telefoontoestel.
US05/548,997 US3973082A (en)	1974-02-26	1975-02-11	Electronic telephone subscriber set with voltage controlled variable shunt
DE2505957A DE2505957C3 (de)	1974-02-26	1975-02-13	Schaltungsanordnung zum Speisen von elektronischen Teilnehmerstellen
DK67875AA DK142827B (da)	1974-02-26	1975-02-21	Elektronisk telefonapparat.
CA220,566A CA1017087A (en)	1974-02-26	1975-02-21	Electronic telephone subscriber set
GB735675A GB1454157A (en)	1974-02-26	1975-02-21	Electronic telephone subscriber set speech compressor
JP2235975A JPS5429326B2 (nl)	1974-02-26	1975-02-22
SE7502006A SE392557B (sv)	1974-02-26	1975-02-24	Abonnenttelefonapparat
BE153666A BE825894A (fr)	1974-02-26	1975-02-24	Appareil telephonique electronique
FR7506017A FR2262455A1 (nl)	1974-02-26	1975-02-26

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7402575A NL7402575A (nl)	1974-02-26	1974-02-26	Elektronisch telefoontoestel.

Publications (1)

Publication Number	Publication Date
NL7402575A true NL7402575A (nl)	1975-08-28

Family

ID=19820839

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7402575A NL7402575A (nl)	1974-02-26	1974-02-26	Elektronisch telefoontoestel.

Country Status (10)

Country	Link
US (1)	US3973082A (nl)
JP (1)	JPS5429326B2 (nl)
BE (1)	BE825894A (nl)
CA (1)	CA1017087A (nl)
DE (1)	DE2505957C3 (nl)
DK (1)	DK142827B (nl)
FR (1)	FR2262455A1 (nl)
GB (1)	GB1454157A (nl)
NL (1)	NL7402575A (nl)
SE (1)	SE392557B (nl)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2057815B (en) *	1979-08-31	1983-08-10	Standard Telephones Cables Ltd	Electronic telephone circuit
NL7907275A (nl) *	1979-10-01	1981-04-03	Philips Nv	Spanningsstabilisator geschikt voor een telefoon- toestel.
NL7907276A (nl) *	1979-10-01	1981-04-03	Philips Nv	Spanningsstabilisator geschikt voor toepassing in een telefoontoestel.
GB2065418B (en) *	1979-12-06	1984-02-15	Standard Telephones Cables Ltd	Telephone line feed
US4332984A (en) *	1979-12-13	1982-06-01	Bell Telephone Laboratories, Incorporated	Active speech network circuit for a telephone set
FR2484749B1 (fr) *	1980-06-16	1987-10-30	Cit Alcatel	Dispositif d'alimentation en energie electrique d'un equipement pouvant prendre deux etats correspondant a des consommations differentes
CA1157175A (en) *	1981-02-20	1983-11-15	Mitel Corporation	Power saving line circuit
NL8103419A (nl) *	1981-04-01	1982-11-01	Philips Nv	Lijntestcircuit voor een abonneetelefoontoestel.
FR2519218A1 (fr) *	1981-12-24	1983-07-01	Telecommunications Sa	Procede et dispositif d'alimentation d'une regie d'abonne
DE3513625A1 (de) *	1985-04-16	1986-10-23	Nixdorf Computer Ag, 4790 Paderborn	Schaltungsanordnung fuer die fernspeisung von teilnehmeranschluss-endgeraeten in fernmeldeanlagen
JP2845181B2 (ja) *	1995-09-22	1999-01-13	日本電気株式会社	加入者回路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3035122A (en) *	1958-09-30	1962-05-15	Gen Dynamics Corp	Constant current line circuitt for loop telephone lines
FR2038463A5 (nl) *	1969-03-12	1971-01-08	Person Jean
CA930488A (en) *	1971-08-27	1973-07-17	C. J. Cowpland Michael	Power supply

1974
- 1974-02-26 NL NL7402575A patent/NL7402575A/nl not_active Application Discontinuation
1975
- 1975-02-11 US US05/548,997 patent/US3973082A/en not_active Expired - Lifetime
- 1975-02-13 DE DE2505957A patent/DE2505957C3/de not_active Expired
- 1975-02-21 CA CA220,566A patent/CA1017087A/en not_active Expired
- 1975-02-21 GB GB735675A patent/GB1454157A/en not_active Expired
- 1975-02-21 DK DK67875AA patent/DK142827B/da unknown
- 1975-02-22 JP JP2235975A patent/JPS5429326B2/ja not_active Expired
- 1975-02-24 BE BE153666A patent/BE825894A/xx unknown
- 1975-02-24 SE SE7502006A patent/SE392557B/xx unknown
- 1975-02-26 FR FR7506017A patent/FR2262455A1/fr active Pending

Also Published As

Publication number	Publication date
CA1017087A (en)	1977-09-06
DK142827C (nl)	1981-09-07
DE2505957B2 (de)	1980-06-04
BE825894A (fr)	1975-08-25
JPS50120505A (nl)	1975-09-20
DE2505957C3 (de)	1981-02-12
SE7502006L (nl)	1975-08-27
US3973082A (en)	1976-08-03
JPS5429326B2 (nl)	1979-09-22
DK67875A (nl)	1975-10-27
DK142827B (da)	1981-02-02
FR2262455A1 (nl)	1975-09-19
DE2505957A1 (de)	1975-08-28
GB1454157A (en)	1976-10-27
SE392557B (sv)	1977-03-28

Legal Events

Date	Code	Title	Description
1979-10-25	BV	The patent application has lapsed

Publication	Publication Date	Title
NL186058C (nl)	1990-09-03	Microfooninrichting.
NL7413264A (nl)	1976-04-13	Geintegreerde schakeling.
NL7511561A (nl)	1976-04-06	Diefstalvrij koffertje.
NL7505781A (nl)	1975-12-02	Soldeerloze verbinding.
SE7607437L (sv)	1977-01-09	Elektroniskt telefonnet
SE397142B (sv)	1977-10-17	Elektrostaisk kopieringsmaskin
NL7402575A (nl)	1975-08-28	Elektronisch telefoontoestel.
NL7416395A (nl)	1976-06-21	Elektronenmikroskoop.
SE384959B (sv)	1976-05-24	Telefontillsats
NL7514138A (nl)	1976-06-15	Luidsprekend telefoonstelsel.
NL7509787A (nl)	1976-02-25	Electronische rekenmachine.
IT1041872B (it)	1980-01-10	Apparecchio telefonico
NL7501953A (nl)	1975-10-03	Elektroradiografisch stelsel.
SE7505655L (sv)	1975-11-21	Likstromstellarkrets.
NL7500501A (nl)	1975-07-28	Telefoonkiessysteem.
SE7506416L (sv)	1975-12-09	Elektronisk taxameter.
NL7510754A (nl)	1976-03-30	Bellendomeingenerators.
SE414215B (sv)	1980-07-14	Elektroniskt tendsystem.
NL7511071A (nl)	1976-04-13	Electronische ontsteker.
NL7512557A (nl)	1976-05-04	Microfooninrichting.
NL7515049A (nl)	1976-07-02	Telefoonverbindingsinrichting.
NL7508010A (nl)	1976-01-07	Telefoonnummer-repertoir-kiesinrichting.
SE7504481L (sv)	1975-10-20	Likstromstyrkretsar.
NL7510276A (nl)	1977-03-03	Elektronenmikroskoop.
NL7506498A (nl)	1976-05-18	Kiesautomaat.