CH521073A - Schaltvorrichtung für einen Telephonapparat - Google Patents

Schaltvorrichtung für einen Telephonapparat

Info

Publication number: CH521073A
Authority: CH; Switzerland
Prior art keywords: switching device; telephone set; telephone; switching
Prior art date: 1970-02-27

Application number

CH279671A

Other languages

English (en)

Inventor

Hugo Blomberg Knut

Original Assignee

Hugo Blomberg Knut

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.)

1970-02-27

Filing date

1971-02-26

Publication date

1972-03-31

1971-02-26 Application filed by Hugo Blomberg Knut filed Critical Hugo Blomberg Knut

1972-03-31 Publication of CH521073A publication Critical patent/CH521073A/de

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Telephone Set Structure (AREA)

CH279671A 1970-02-27 1971-02-26 Schaltvorrichtung für einen Telephonapparat CH521073A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE02659/70A SE363454B (de)	1970-02-27	1970-02-27

Publications (1)

Publication Number	Publication Date
CH521073A true CH521073A (de)	1972-03-31

Family

ID=20260400

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH279671A CH521073A (de)	1970-02-27	1971-02-26	Schaltvorrichtung für einen Telephonapparat

Country Status (3)

Country	Link
US (1)	US3760122A (de)
CH (1)	CH521073A (de)
SE (1)	SE363454B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3927278A (en) *	1973-03-23	1975-12-16	Nitsuko Ltd	Direct-station-selection intercommunication and automatic holding circuit in a key telephone system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR720111A (fr) *	1930-07-17	1932-02-16	Siemens Ag	Appareil téléphonique automatique à main
US2183744A (en) *	1936-01-13	1939-12-19	Jesse P Hubbell	Telephone instrument
NL85027C (de) *	1941-07-10
BE465890A (de) *	1942-12-30
US2657265A (en) *	1948-01-23	1953-10-27	Branson John Charles Sydney	Amplifying device for use with telephone apparatus
US2549929A (en) *	1948-03-24	1951-04-24	Kenworth Mfg & Stamping Co	Adjustable radio silencer
US2586910A (en) *	1950-10-12	1952-02-26	Edward A Bolle	Lamp switch actuator for use in conjunction with a telephone apparatus
US2812422A (en) *	1953-12-28	1957-11-05	Brearley Co	Illuminated bathroom scale
US2910538A (en) *	1957-06-10	1959-10-27	Gen Telephone Lab Inc	Desk telephone
US3100818A (en) *	1959-11-06	1963-08-13	Thomas F Carter	Communication systems
US3156771A (en) *	1960-11-14	1964-11-10	Elijah J Vaughn	Telephone loud-speaker combination
NO120997B (de) *	1964-10-19	1971-01-04	Ring System Maskiner Gustav
US3548117A (en) *	1968-02-28	1970-12-15	Knut Hugo Blomberg	Wallbracket for standing telephones
US3636547A (en) *	1969-06-09	1972-01-18	Robert J Brace	Alarm system and method of incorporating magnetic switch means magnetically controlled electrical switches

1970
- 1970-02-27 SE SE02659/70A patent/SE363454B/xx unknown
1971
- 1971-02-23 US US00118025A patent/US3760122A/en not_active Expired - Lifetime
- 1971-02-26 CH CH279671A patent/CH521073A/de not_active IP Right Cessation

Also Published As

Publication number	Publication date
US3760122A (en)	1973-09-18
SE363454B (de)	1974-01-14

Similar Documents

Publication	Publication Date	Title
AT293494B (de)	1971-10-11	Gabelumschalter für ein Fernsprechgerät
AT299391B (de)	1972-06-12	Steueranordnung für einen statischen Direktumrichter
CH541227A (de)	1973-10-15	Vorauslösegerät für einen Synchronschalter
CH527511A (de)	1972-08-31	Löschschaltungsanordnung für einen Thyristor
ES192498Y (es)	1975-01-01	Un dispositivo conmutador.
CH543840A (de)	1973-10-31	Verstärkeranordnung für einen Telefonapparat
CH509694A (de)	1971-06-30	Schaltungsanordnung für einen Umformer
CH539332A (de)	1973-07-15	Schalteinrichtung
CH521073A (de)	1972-03-31	Schaltvorrichtung für einen Telephonapparat
CH503372A (de)	1971-02-15	Montagevorrichtung für einen Thyristor
BE764856R (nl)	1971-09-27	Telefoontoestel
AT324482B (de)	1975-09-10	Schalteinrichtung
AT309107B (de)	1973-08-10	Wechselvorrichtung für einen Dia-Projektor
AT325117B (de)	1975-10-10	Handapparat für fernsprechapparate
AT317345B (de)	1974-08-26	Verzögerungsvorrichtung für Hilfskontakte
CH541913A (de)	1973-09-15	Gabelumschalter für einen Fernsprechapparat
AT312322B (de)	1973-12-27	Schaltvorrichtung
ES197588Y (es)	1975-10-01	Un dispositivo contactor.
CH540616A (de)	1973-08-15	Schaltungsanordnung für einen Telephon-Gebührenmelder
AT306946B (de)	1973-04-25	Haltevorrichtung für einen Vorhang
AT320038B (de)	1975-01-27	Schaltungsanordnung für eine Fernsprechanlage
AT302188B (de)	1972-10-10	Wählvorrichtung
CH513368A (de)	1971-09-30	Strahlungsgesteuerte Schaltvorrichtung
AT322640B (de)	1975-05-26	Ruftongeber für fernsprechapparate
AT259077B (de)	1967-12-27	Anlaßschaltung für einen lastgeführten Umrichter

Legal Events

Date	Code	Title	Description
1985-10-31	PL	Patent ceased