BE423720A - - Google Patents

Info

Publication number
BE423720A
BE423720A BE423720DA BE423720A BE 423720 A BE423720 A BE 423720A BE 423720D A BE423720D A BE 423720DA BE 423720 A BE423720 A BE 423720A
Authority
BE
Belgium
Prior art keywords
relay
station
circuit
switch
recording
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE423720A publication Critical patent/BE423720A/fr

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/20Checking timed patrols, e.g. of watchman

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
BE423720D BE423720A (ja�@�@)

Publications (1)

Publication Number Publication Date
BE423720A true BE423720A (ja�@�@)

Family

ID=85125

Family Applications (1)

Application Number Title Priority Date Filing Date
BE423720D BE423720A (ja�@�@)

Country Status (1)

Country Link
BE (1) BE423720A (ja�@�@)

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