NL69785C - - Google Patents

Info

Publication number: NL69785C
Authority: NL; Netherlands

Application number

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.)

1947-02-21

Publication of NL69785C publication Critical patent/NL69785C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Devices For Supply Of Signal Current (AREA)
Telephonic Communication Services (AREA)

NL69785D 1947-02-21 NL69785C (mo)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL130519		1947-02-21

Publications (1)

Publication Number	Publication Date
NL69785C true NL69785C (mo)

Family

ID=19750410

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL69785D NL69785C (mo)	1947-02-21

Country Status (6)

Country	Link
US (1)	US2496784A (mo)
CH (1)	CH265981A (mo)
DE (1)	DE841924C (mo)
FR (2)	FR961481A (mo)
GB (1)	GB656189A (mo)
NL (1)	NL69785C (mo)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL80217C (mo) *	1950-06-15
DE931711C (de) *	1950-08-27	1955-08-16	Lorenz C Ag	Empfaenger fuer Wechselstromimpulse
DE973493C (de) *	1950-09-28	1960-03-10	Philips Nv	Einseitenbandtraegerfrequenzfernsprechsystem
NL92529C (mo) *	1952-04-09
DE939820C (de) *	1952-05-06	1956-03-01	Siemens Ag	Schaltungsanordnung zum Empfang von Spannungen einer oder mehrerer Signalfrequenzen
FI104995B (fi)	1999-01-28	2000-05-15	Halton Oy	Kaasumaista väliainetta kuten ilmavirtausta säätävän venttiilin säädinrakenne

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL39470B (mo) *	1927-01-04
US2018464A (en) *	1930-06-07	1935-10-22	Bell Telephone Labor Inc	Voice operated transmission circuit
FR812623A (fr) *	1936-01-16	1937-05-13	Applic Telephoniques Soc D	Dispositif pour la réception et la retransmission des signaux dans les lignes téléphoniques à longue distance
US2145053A (en) *	1936-11-18	1939-01-24	Bell Telephone Labor Inc	Signaling system
US2199179A (en) *	1936-11-27	1940-04-30	Rca Corp	Single channel two-way communication system
US2251958A (en) *	1937-01-29	1941-08-12	Hartford Nat Bank & Trust Co	Telephony
US2164185A (en) *	1937-05-22	1939-06-27	Great Lakes Pipe Line Company	Voice operated repeater
GB495162A (en) *	1938-02-22	1938-11-08	Arthur Reginald Albert Rendall	Improvements in and relating to alternating current signalling systems
BE434364A (mo) *	1938-05-16
BE464853A (mo) *	1939-08-14
US2366011A (en) *	1941-07-23	1944-12-26	Kellogg Switchboard & Supply	Two-way amplifier
US2319306A (en) *	1941-10-31	1943-05-18	Bell Telephone Labor Inc	Signaling system

0
- NL NL69785D patent/NL69785C/xx active
- FR FR963277D patent/FR963277A/fr not_active Expired
- FR FR961481D patent/FR961481A/fr not_active Expired
1948
- 1948-01-23 US US3964A patent/US2496784A/en not_active Expired - Lifetime
- 1948-02-19 GB GB4868/48A patent/GB656189A/en not_active Expired
- 1948-02-19 CH CH265981D patent/CH265981A/de unknown
- 1948-12-14 DE DEP24581A patent/DE841924C/de not_active Expired

Also Published As

Publication number	Publication date
FR961481A (mo)	1950-05-12
US2496784A (en)	1950-02-07
CH265981A (de)	1949-12-31
FR963277A (mo)	1950-07-05
GB656189A (en)	1951-08-15
DE841924C (de)	1952-06-19

Publication	Publication Date	Title
FR963277A (mo)	1950-07-05
FR960342A (mo)	1950-04-17
AT166672B (mo)	1950-09-11
AT165673B (mo)	1950-04-11
AT165884B (mo)	1950-05-10
BE474505A (mo)	1947-04-30
LU29053A1 (mo)	1948-07-24
BE472149A (mo)	1947-09-27
BE474389A (mo)
BE474080A (mo)
BE474335A (mo)
BE470620A (mo)
BE342691A (mo)
BE484655A (mo)
BE458425A (mo)
BE471830A (mo)	1947-04-30
BE473383A (mo)
BE471160A (mo)
BE470729A (mo)
BE473954A (mo)
BE474614A (mo)
BE474625A (mo)
BE463900A (mo)
BE470671A (mo)
BE471414A (mo)