FR13635E - - Google Patents

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Publication number
FR13635E
FR13635E FR13635DA FR13635E FR 13635 E FR13635 E FR 13635E FR 13635D A FR13635D A FR 13635DA FR 13635 E FR13635 E FR 13635E
Authority
FR
France
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.)
Active
Application number
Publication of FR13635E publication Critical patent/FR13635E/fr
Active legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR13635D Active FR13635E (fr)

Publications (1)

Publication Number Publication Date
FR13635E true FR13635E (fr)

Family

ID=1355671

Family Applications (1)

Application Number Title Priority Date Filing Date
FR13635D Active FR13635E (fr)

Country Status (1)

Country Link
FR (1) FR13635E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2205988A1 (de) * 1971-02-12 1972-08-17 Kockums Mekaniska Verkstads Ab Verfahren und Vorrichtung zur Erzeugung eines akustischen Signals laut einer stufenweise gleitenden Tonleiter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2205988A1 (de) * 1971-02-12 1972-08-17 Kockums Mekaniska Verkstads Ab Verfahren und Vorrichtung zur Erzeugung eines akustischen Signals laut einer stufenweise gleitenden Tonleiter

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