BE457604A - - Google Patents

Info

Publication number
BE457604A
BE457604A BE457604DA BE457604A BE 457604 A BE457604 A BE 457604A BE 457604D A BE457604D A BE 457604DA BE 457604 A BE457604 A BE 457604A
Authority
BE
Belgium
Prior art keywords
relay
relays
circuit
combiner
contact
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE457604A publication Critical patent/BE457604A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/08Circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Selective Calling Equipment (AREA)
BE457604D BE457604A (enExample)

Publications (1)

Publication Number Publication Date
BE457604A true BE457604A (enExample)

Family

ID=111038

Family Applications (1)

Application Number Title Priority Date Filing Date
BE457604D BE457604A (enExample)

Country Status (1)

Country Link
BE (1) BE457604A (enExample)

Similar Documents

Publication Publication Date Title
BE457604A (enExample)
US1226184A (en) Electrical selector.
US2396756A (en) Music reproduction system
US1227523A (en) Phonographic time-announcer.
US1142252A (en) Remote-control high-potential switch.
US2489638A (en) Arrangement for switching on and initiating processes by means of telephone calls
US2542880A (en) Condition-responsive apparatus for calling preselected telephone numbers
US950004A (en) Railway telephone signaling apparatus.
US2512652A (en) Selective remote signaling system
US1206761A (en) Telephone systems.
US1233037A (en) Fire-alarm system for telephone-exchanges using line-distributers.
US975529A (en) Switch.
US1375059A (en) Signal system
US1225935A (en) Fire-alarm telephone transmitting mechanism.
US1007545A (en) Signal system.
US299561A (en) Method of and apparatus for individualizing telephone time-signals
BE731310A (enExample)
US1075258A (en) Telephony.
US991260A (en) Automatic telephone system.
US1107138A (en) Automatic telephone-exchange system.
US1174434A (en) Telephone pay-station.
US1154929A (en) Signaling system.
US1177271A (en) Telegraph system.
US1051148A (en) Selective signaling system.
CH101057A (fr) Installation pour bureau central téléphonique à commutation automatique.