FR590336A - Automatic fog signals - Google Patents

Automatic fog signals

Info

Publication number
FR590336A
FR590336A FR590336DA FR590336A FR 590336 A FR590336 A FR 590336A FR 590336D A FR590336D A FR 590336DA FR 590336 A FR590336 A FR 590336A
Authority
FR
France
Prior art keywords
automatic fog
fog signals
signals
automatic
fog
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
Malcolm F Willoughby
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 FR590336A publication Critical patent/FR590336A/en
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)
FR590336D 1924-12-12 1924-12-12 Automatic fog signals Expired FR590336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR590336T 1924-12-12

Publications (1)

Publication Number Publication Date
FR590336A true FR590336A (en) 1925-06-15

Family

ID=8963338

Family Applications (1)

Application Number Title Priority Date Filing Date
FR590336D Expired FR590336A (en) 1924-12-12 1924-12-12 Automatic fog signals

Country Status (1)

Country Link
FR (1) FR590336A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704046A (en) * 1952-08-30 1955-03-15 David J Moraga Irrigation signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704046A (en) * 1952-08-30 1955-03-15 David J Moraga Irrigation signal

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