CH53859A - Electric alarm device - Google Patents

Electric alarm device

Info

Publication number: CH53859A
Authority: CH; Switzerland
Prior art keywords: alarm device; electric alarm; electric; alarm
Prior art date: 1911-01-23

Application number

CH53859A

Other languages

German (de)

Inventor

Frederick Goss

Original Assignee

Frederick Goss

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.)

1911-01-23

Filing date

1911-01-23

Publication date

1912-04-01

1911-01-23 Application filed by Frederick Goss filed Critical Frederick Goss

1912-04-01 Publication of CH53859A publication Critical patent/CH53859A/en

Links

Classifications

- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
- G04C21/30—Producing 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
- G04C21/305—Producing 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 by the hand(s) or handlike members closing the contacts

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)

CH53859A 1911-01-23 1911-01-23 Electric alarm device CH53859A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH53859T		1911-01-23

Publications (1)

Publication Number	Publication Date
CH53859A true CH53859A (en)	1912-04-01

Family

ID=4292682

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH53859A CH53859A (en)	1911-01-23	1911-01-23	Electric alarm device

Country Status (1)

Country	Link
CH (1)	CH53859A (en)

1911
- 1911-01-23 CH CH53859A patent/CH53859A/en unknown

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