BE467777A - - Google Patents

Info

Publication number: BE467777A
Authority: BE; Belgium

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.)

1945-02-21

Publication of BE467777A publication Critical patent/BE467777A/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)

BE467777D 1945-02-21 BE467777A (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US579126A US2414440A (en)	1945-02-21	1945-02-21	Voice frequency ringer

Publications (1)

Publication Number	Publication Date
BE467777A true BE467777A (xx)

Family

ID=24315671

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE467777D BE467777A (xx)	1945-02-21

Country Status (5)

Country	Link
US (1)	US2414440A (xx)
BE (1)	BE467777A (xx)
ES (1)	ES172956A1 (xx)
FR (1)	FR922528A (xx)
GB (1)	GB608117A (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR960967A (xx) *	1945-02-06	1950-04-28
US2751436A (en) *	1952-03-27	1956-06-19	Automatic Elect Lab	Carrier current telephone systems
DE1004860B (de) *	1952-12-18	1957-03-21	Roland Laraque	Brennkraftmaschine mit gegenlaeufigen Kolben
FR1098648A (fr) *	1954-01-22	1955-08-16	Lignes Telegraph Telephon	Dispositif de réception de signaux télégraphiques

0
- BE BE467777D patent/BE467777A/xx unknown
1945
- 1945-02-21 US US579126A patent/US2414440A/en not_active Expired - Lifetime
1946
- 1946-02-15 GB GB4826/46A patent/GB608117A/en not_active Expired
- 1946-02-18 FR FR922528D patent/FR922528A/fr not_active Expired
- 1946-03-20 ES ES172956A patent/ES172956A1/es not_active Expired

Also Published As

Publication number	Publication date
FR922528A (fr)	1947-06-11
US2414440A (en)	1947-01-21
ES172956A1 (es)	1946-05-01
GB608117A (en)	1948-09-09

Publication	Publication Date	Title
NL63585C (xx)	1949-06-15
BE466923A (xx)	1966-08-31
FR937446A (xx)	1948-08-31
FR954888A (xx)	1950-01-06
FR957484A (xx)	1950-02-20
FR960967A (xx)	1950-04-28
FR958723A (xx)	1950-03-17
AT190006B (xx)	1957-05-25
FR957886A (xx)	1950-02-28
FR957150A (xx)	1950-02-16
FR955324A (xx)	1950-01-14
BE467051A (xx)
BE468420A (xx)
BE467288A (xx)	1946-09-30
BE467594A (xx)
BE467816A (xx)
BE469107A (xx)
BE470927A (xx)
BE472713A (xx)
BE475832A (xx)
BE476510A (xx)	1948-04-03
BE476631A (xx)
BE481962A (xx)
BE496545A (xx)
BE463985A (xx)