BE483450A - - Google Patents

Info

Publication number: BE483450A
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.)

1942-05-02

Publication of BE483450A publication Critical patent/BE483450A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/42221—Conversation recording systems

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Computer Networks & Wireless Communication (AREA)
Data Exchanges In Wide-Area Networks (AREA)
Telephonic Communication Services (AREA)

BE483450D 1942-05-02 BE483450A (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL309354X		1942-05-02

Publications (1)

Publication Number	Publication Date
BE483450A true BE483450A (sv)

Family

ID=19783577

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE483450D BE483450A (sv)	1942-05-02

Country Status (5)

Country	Link
BE (1)	BE483450A (sv)
CH (1)	CH309354A (sv)
DE (1)	DE851825C (sv)
FR (1)	FR958997A (sv)
NL (1)	NL57012C (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE548354A (sv) *	1955-06-06

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2056277A (en) *	1935-07-24	1936-10-06		Telegraph repeating system
US2149386A (en) *	1936-04-02	1939-03-07	Teletype Corp	Intercommunicating and broadcasting switchboard
BE428135A (sv) *	1937-05-21

0
- FR FR958997D patent/FR958997A/fr not_active Expired
- NL NL57012D patent/NL57012C/xx active
- BE BE483450D patent/BE483450A/xx unknown
1947
- 1947-12-19 CH CH309354D patent/CH309354A/fr unknown
1950
- 1950-06-18 DE DEST1336A patent/DE851825C/de not_active Expired

Also Published As

Publication number	Publication date
DE851825C (de)	1952-10-09
NL57012C (sv)
FR958997A (sv)	1950-03-22
CH309354A (fr)	1955-08-31

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