NL89644C - - Google Patents

Info

Publication number
NL89644C
NL89644C NL89644DA NL89644C NL 89644 C NL89644 C NL 89644C NL 89644D A NL89644D A NL 89644DA NL 89644 C NL89644 C NL 89644C
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 NL89644C publication Critical patent/NL89644C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • 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
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
NL89644D 1952-03-04 NL89644C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1052056T 1952-03-04

Publications (1)

Publication Number Publication Date
NL89644C true NL89644C (xx)

Family

ID=9595063

Family Applications (2)

Application Number Title Priority Date Filing Date
NL89644D NL89644C (xx) 1952-03-04
NL7700447B NL169510B (nl) 1952-03-04 Inrichting voor het sturen van een via leidingen door een pomp gevoede servomotor.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL7700447B NL169510B (nl) 1952-03-04 Inrichting voor het sturen van een via leidingen door een pomp gevoede servomotor.

Country Status (4)

Country Link
CH (1) CH308383A (xx)
FR (3) FR1052055A (xx)
IT (1) IT500077A (xx)
NL (2) NL169510B (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270678A (xx) * 1960-10-29
US3529105A (en) * 1967-02-15 1970-09-15 Emerson Electric Co Snap switch and thermoresponsive actuator

Also Published As

Publication number Publication date
IT500077A (xx)
NL169510B (nl)
FR1052055A (fr) 1954-01-21
FR1052056A (fr) 1954-01-21
FR1052054A (fr) 1954-01-21
CH308383A (fr) 1955-07-15

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