FR549213A - Perfectionnements aux signaux de brouillard - Google Patents

Perfectionnements aux signaux de brouillard

Info

Publication number
FR549213A
FR549213A FR549213DA FR549213A FR 549213 A FR549213 A FR 549213A FR 549213D A FR549213D A FR 549213DA FR 549213 A FR549213 A FR 549213A
Authority
FR
France
Prior art keywords
fog signals
fog
signals
signals improvements
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
Henry Manning Fellows
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 FR549213A publication Critical patent/FR549213A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B45/00—Arrangements or adaptations of signalling or lighting devices
    • B63B45/08—Arrangements or adaptations of signalling or lighting devices the devices being acoustic

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
FR549213D 1922-03-22 1922-03-22 Perfectionnements aux signaux de brouillard Expired FR549213A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR549213T 1922-03-22

Publications (1)

Publication Number Publication Date
FR549213A true FR549213A (fr) 1923-02-05

Family

ID=8935373

Family Applications (1)

Application Number Title Priority Date Filing Date
FR549213D Expired FR549213A (fr) 1922-03-22 1922-03-22 Perfectionnements aux signaux de brouillard

Country Status (1)

Country Link
FR (1) FR549213A (fr)

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