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CH2990A - Electric, automatic alarm clock and signal device - Google Patents

Electric, automatic alarm clock and signal device

Info

Publication number
CH2990A
CH2990A CH2990A CH2990DA CH2990A CH 2990 A CH2990 A CH 2990A CH 2990 A CH2990 A CH 2990A CH 2990D A CH2990D A CH 2990DA CH 2990 A CH2990 A CH 2990A
Authority
CH
Switzerland
Prior art keywords
electric
alarm clock
signal device
automatic alarm
automatic
Prior art date
Application number
CH2990A
Other languages
German (de)
Inventor
Jakob Stamm
Original Assignee
Jakob Stamm
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.)
Filing date
Publication date
Application filed by Jakob Stamm filed Critical Jakob Stamm
Publication of CH2990A publication Critical patent/CH2990A/en

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00Producing acoustic time signals by electrical means
    • G04C21/16Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/30Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
    • G04C21/32Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school giving indications at a number of places each at a different time, e.g. system of alarms in a hotel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
CH2990A 1890-12-18 1890-12-18 Electric, automatic alarm clock and signal device CH2990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2990T 1890-12-18

Publications (1)

Publication Number Publication Date
CH2990A true CH2990A (en) 1891-05-15

Family

ID=4183813

Family Applications (1)

Application Number Title Priority Date Filing Date
CH2990A CH2990A (en) 1890-12-18 1890-12-18 Electric, automatic alarm clock and signal device

Country Status (1)

Country Link
CH (1) CH2990A (en)

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