NL72570C - - Google Patents

Info

Publication number
NL72570C
NL72570C NL72570DA NL72570C NL 72570 C NL72570 C NL 72570C NL 72570D A NL72570D A NL 72570DA NL 72570 C NL72570 C NL 72570C
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.)
Publication of NL72570C publication Critical patent/NL72570C/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal
    • 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
NL72570D 1949-09-02 NL72570C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR910908X 1949-09-02

Publications (1)

Publication Number Publication Date
NL72570C true NL72570C (xx)

Family

ID=9415260

Family Applications (1)

Application Number Title Priority Date Filing Date
NL72570D NL72570C (xx) 1949-09-02

Country Status (6)

Country Link
US (1) US2613279A (xx)
CH (1) CH285305A (xx)
DE (1) DE910908C (xx)
FR (1) FR1028755A (xx)
GB (1) GB673329A (xx)
NL (1) NL72570C (xx)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775647A (en) * 1950-09-28 1956-12-25 Hartford Nat Bank & Trust Co Single sideband carrier-wave telephone system
US2782258A (en) * 1950-12-29 1957-02-19 Ericsson Telefon Ab L M Automatic control system
BE510681A (xx) * 1951-04-17
US2692307A (en) * 1952-02-19 1954-10-19 Bell Telephone Labor Inc Transmission regulation
US2882341A (en) * 1952-07-28 1959-04-14 Gen Dynamics Corp Telephone system
US2781417A (en) * 1953-08-07 1957-02-12 George G Bower Telephone transmission system
DE1003805B (de) * 1954-05-12 1957-03-07 Philips Nv Schaltungsanordnung fuer ein UEbertragungssystem zum Verstaerken und zum Empfang sowohl von Anrufsignalen als auch von UEberwachungssignalen
DE1018918B (de) * 1955-03-07 1957-11-07 Siemens Ag Mehrkanal-Nachrichtenuebertragungssystem mit Kompander
US3045070A (en) * 1956-08-23 1962-07-17 Ericsson Telefon Ab L M Multiplex carrier frequency transmission system
DE1151561B (de) * 1961-07-22 1963-07-18 Felten & Guilleaume Gmbh Verfahren und Anordnung zur Einpegelung von Traegerfrequenzsystemen
DE1154836B (de) * 1962-07-31 1963-09-26 Felten & Guilleaume Gmbh Anordnung zur Pegelregelung in Traegerfrequenzsystemen vorzugsweise geringer Kanalzahl
DE2721479C3 (de) * 1977-05-12 1980-04-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen TF-Tonübertragungssystem
US5410541A (en) * 1992-05-04 1995-04-25 Ivon International, Inc. System for simultaneous analog and digital communications over an analog channel
US5726893A (en) * 1992-12-17 1998-03-10 Stanford Telecommunications, Inc. Cellular telephone with voice-in-data modem

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692735C (de) * 1931-02-28 1940-06-26 Siemens & Halske Akt Ges Anrufverfahren fuer Hochfrequenztelephonie laengs Leitungen
FR748843A (fr) * 1932-01-20 1933-07-10 Materiel Telephonique Perfectionnements apportés aux systèmes électriques de transmission de signaux par courants alternatifs
US2145053A (en) * 1936-11-18 1939-01-24 Bell Telephone Labor Inc Signaling system
DE698322C (de) * 1937-02-03 1940-11-07 Siemens & Halske Akt Ges Veraenderbares Netzwerk
NL52757C (xx) * 1937-12-27
US2300415A (en) * 1941-04-26 1942-11-03 Bell Telephone Labor Inc Transmission control
US2319306A (en) * 1941-10-31 1943-05-18 Bell Telephone Labor Inc Signaling system
US2310749A (en) * 1942-03-31 1943-02-09 Bell Telephone Labor Inc Singaling system
BE465290A (xx) * 1945-04-30

Also Published As

Publication number Publication date
CH285305A (fr) 1952-08-31
DE910908C (de) 1954-05-06
GB673329A (en) 1952-06-04
US2613279A (en) 1952-10-07
FR1028755A (fr) 1953-05-27

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