BE562284A - - Google Patents

Info

Publication number
BE562284A
BE562284A BE562284DA BE562284A BE 562284 A BE562284 A BE 562284A BE 562284D A BE562284D A BE 562284DA BE 562284 A BE562284 A BE 562284A
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.)
Publication of BE562284A publication Critical patent/BE562284A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
BE562284D 1957-03-21 BE562284A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1107718X 1957-03-21

Publications (1)

Publication Number Publication Date
BE562284A true BE562284A (fr)

Family

ID=4557872

Family Applications (1)

Application Number Title Priority Date Filing Date
BE562284D BE562284A (fr) 1957-03-21

Country Status (3)

Country Link
BE (1) BE562284A (fr)
CH (2) CH347231A (fr)
DE (1) DE1107718B (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666812A (en) * 1951-10-24 1954-01-19 Bell Telephone Labor Inc Telephone signaling system
BE522106A (fr) * 1952-08-16
DE1001713B (de) * 1953-12-07 1957-01-31 Telefonbau & Normalzeit Gmbh Telefonteilnehmerstation mit tastengesteuerter Frequenzwahl und einem Schichttransistoren enthaltenden Mikrophonverstaerker
DE1729258U (de) * 1955-06-18 1956-09-06 Quante & Co K G Anordnung zur ruf- und signalfrequenzerzeugung fuer ob-fernsprechapparate und vermittlungseinrichtungen.

Also Published As

Publication number Publication date
CH350016A (de) 1960-11-15
DE1107718B (de) 1961-05-31
CH347231A (de) 1960-06-30

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