BE531089A - - Google Patents

Info

Publication number
BE531089A
BE531089A BE531089DA BE531089A BE 531089 A BE531089 A BE 531089A BE 531089D A BE531089D A BE 531089DA BE 531089 A BE531089 A BE 531089A
Authority
BE
Belgium
Prior art keywords
relays
printing
contacts
relay
group
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE531089A publication Critical patent/BE531089A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/32—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Keying Circuit Devices (AREA)
BE531089D BE531089A (cs)

Publications (1)

Publication Number Publication Date
BE531089A true BE531089A (cs)

Family

ID=163543

Family Applications (1)

Application Number Title Priority Date Filing Date
BE531089D BE531089A (cs)

Country Status (1)

Country Link
BE (1) BE531089A (cs)

Similar Documents

Publication Publication Date Title
FR2682528A1 (fr) Dispositif pour la determination de l'etat d'un appareil et en particulier de l'etat ouvert ou ferme d'un appareil electrique a l'aide de contacts auxiliaires.
EP0987727B1 (fr) Méthode de discrimination entre un arc interne et un arc de coupure dans un disjoncteur de moyenne ou de haute tension
BE531089A (cs)
US2322848A (en) Pulse regenerator
US3774193A (en) Watchman{40 s tour alarm system
US2314720A (en) Automatic meter-reading apparatus
US2195080A (en) Electromechanical mechanism for actuating calculating machines and recording the results therefrom
US788792A (en) Clock-synchronizing system.
US1340358A (en) Resetting device for phonographs
EP0362085B1 (fr) Appareil de coupure de courant à télécommande
BE566998A (cs)
US870078A (en) Electric switching apparatus and controlling apparatus therefor.
BE635983A (cs)
US1024444A (en) Automatic signal-operator.
US708253A (en) Electric clock.
US3032161A (en) Crediting apparatus for automatic coinresponsive machines
CH368941A (fr) Installation de pesage automatique
US443435A (en) fuller
US2263084A (en) Street signal adapter
US1266163A (en) Time-switch.
US1734982A (en) Electric-circuit interrupter
USRE13800E (en) Automatic signal-operator
BE518698A (cs)
CH354515A (fr) Installation automatique de vérification d'un compteur, notamment d'un compteur d'électricité
BE491860A (cs)