FR546413A - Improvements to air pumps for horns - Google Patents

Improvements to air pumps for horns

Info

Publication number
FR546413A
FR546413A FR546413DA FR546413A FR 546413 A FR546413 A FR 546413A FR 546413D A FR546413D A FR 546413DA FR 546413 A FR546413 A FR 546413A
Authority
FR
France
Prior art keywords
horns
air pumps
pumps
air
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
French (fr)
Inventor
Georges-Charles Collin
Henri-Jules Dekker
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 filed Critical
Application granted granted Critical
Publication of FR546413A publication Critical patent/FR546413A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/06—Audible signalling systems; Audible personal calling systems using hydraulic transmission; using pneumatic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR546413D 1922-01-27 1922-01-27 Improvements to air pumps for horns Expired FR546413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR546413T 1922-01-27

Publications (1)

Publication Number Publication Date
FR546413A true FR546413A (en) 1922-11-10

Family

ID=8933524

Family Applications (1)

Application Number Title Priority Date Filing Date
FR546413D Expired FR546413A (en) 1922-01-27 1922-01-27 Improvements to air pumps for horns

Country Status (1)

Country Link
FR (1) FR546413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416488A (en) * 1966-04-28 1968-12-17 Marx & Co Louis Sound producing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416488A (en) * 1966-04-28 1968-12-17 Marx & Co Louis Sound producing device

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