NL97845C - - Google Patents

Info

Publication number
NL97845C
NL97845C NL97845DA NL97845C NL 97845 C NL97845 C NL 97845C NL 97845D A NL97845D A NL 97845DA NL 97845 C NL97845 C NL 97845C
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 NL97845C publication Critical patent/NL97845C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Magnetic Treatment Devices (AREA)
  • Percussion Or Vibration Massage (AREA)
NL97845D 1954-05-26 NL97845C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL772571X 1954-05-26

Publications (1)

Publication Number Publication Date
NL97845C true NL97845C (fr)

Family

ID=19829900

Family Applications (2)

Application Number Title Priority Date Filing Date
NL97845D NL97845C (fr) 1954-05-26
NLAANVRAGE7304922,B NL187887B (nl) 1954-05-26 Salvosignaaldetector voor een kleurentelevisieontvanger.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7304922,B NL187887B (nl) 1954-05-26 Salvosignaaldetector voor een kleurentelevisieontvanger.

Country Status (5)

Country Link
US (1) US2870435A (fr)
DE (1) DE1103818B (fr)
FR (1) FR1142971A (fr)
GB (1) GB772571A (fr)
NL (2) NL187887B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099914B (de) * 1958-03-24 1961-02-16 Gen Motors Corp Taschenempfaenger fuer Personenruf
CH365640A (de) * 1958-08-20 1962-11-15 Nl Ind Radio Artikelen Nira Nv Personenrufanlage
US3115622A (en) * 1958-10-15 1963-12-24 Polard Electronics Corp Panoramic scanning counter
US2921141A (en) * 1958-10-28 1960-01-12 Harry C Miller Company Communication and paging system
US3113270A (en) * 1959-12-18 1963-12-03 Standard Res Consultants Inc Paging and alarm system
US3739329A (en) * 1971-05-24 1973-06-12 Recognition Devices Electronic system for locating
US10002499B2 (en) 2014-11-27 2018-06-19 Abb Schweiz Ag Distribution of audible notifications in a control room

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US887357A (en) * 1907-04-05 1908-05-12 Conn Linn Wireless telephone.
US968224A (en) * 1909-09-08 1910-08-23 Austin M Wolf Differential-gear lock.
US1465932A (en) * 1915-09-11 1923-08-28 Western Electric Co Multiplex radiotelegraph system
AT118829B (de) * 1929-05-16 1930-08-25 Alois Merth Signalapparat für Radioempfangsgeräte.
CH174480A (de) * 1934-03-10 1935-01-15 Schneeberger Werner Anrufvorrichtung für drahtlose Telegraphie und Telephonie.
DE719014C (de) * 1934-08-23 1942-03-26 Telefunken Gmbh Sende-Empfangs-Anordnung zum drahtlosen Gegensprechverkehr mit getrenntem Sender- und Empfaengerteil und gemeinsamer Antenne
US2138894A (en) * 1935-07-31 1938-12-06 Ware Paul Radio paging system
US2198901A (en) * 1938-03-17 1940-04-30 Lorain Telephone Company Signaling system
US2395132A (en) * 1940-05-30 1946-02-19 Automatic Elect Lab Electrical signaling system
US2357925A (en) * 1942-08-07 1944-09-12 Rca Corp Combined reed and relay device
DE872071C (de) * 1943-04-16 1953-03-30 Alfred Dipl-Ing Mattern Tonfrequenzfernwahl- bzw. Rufverfahren
CH234446A (de) * 1943-07-09 1944-09-30 Landis & Gyr Ag Frequenzrelais.
US2494451A (en) * 1946-01-31 1950-01-10 Rca Corp Personal call system
CH273564A (de) * 1947-11-13 1951-02-15 Philips Nv Schaltung an einem Empfänger in einem Übertragungssystem mit selektivem Anruf für jeden am System beteiligten Empfänger.

Also Published As

Publication number Publication date
US2870435A (en) 1959-01-20
FR1142971A (fr) 1957-09-25
NL187887B (nl)
GB772571A (en) 1957-04-17
DE1103818B (de) 1961-03-30

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