FR425878A - Perfectionnements aux horloges avertisseuses - Google Patents

Perfectionnements aux horloges avertisseuses

Info

Publication number
FR425878A
FR425878A FR425878DA FR425878A FR 425878 A FR425878 A FR 425878A FR 425878D A FR425878D A FR 425878DA FR 425878 A FR425878 A FR 425878A
Authority
FR
France
Prior art keywords
clocks
warning
warning clocks
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
Inventor
Frederick Goss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR425878A publication Critical patent/FR425878A/fr
Expired legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR425878D 1911-01-25 1911-01-25 Perfectionnements aux horloges avertisseuses Expired FR425878A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR425878T 1911-01-25

Publications (1)

Publication Number Publication Date
FR425878A true FR425878A (fr) 1911-06-22

Family

ID=1468498

Family Applications (1)

Application Number Title Priority Date Filing Date
FR425878D Expired FR425878A (fr) 1911-01-25 1911-01-25 Perfectionnements aux horloges avertisseuses

Country Status (1)

Country Link
FR (1) FR425878A (fr)

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