FR919497A - Improvement in underwater signaling devices - Google Patents

Improvement in underwater signaling devices

Info

Publication number
FR919497A
FR919497A FR919497DA FR919497A FR 919497 A FR919497 A FR 919497A FR 919497D A FR919497D A FR 919497DA FR 919497 A FR919497 A FR 919497A
Authority
FR
France
Prior art keywords
improvement
signaling devices
underwater signaling
underwater
devices
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)
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.)
Submarine Signal Co
Original Assignee
Submarine Signal Co
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 Submarine Signal Co filed Critical Submarine Signal Co
Application granted granted Critical
Publication of FR919497A publication Critical patent/FR919497A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR919497D 1945-12-28 1945-12-28 Improvement in underwater signaling devices Expired FR919497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR919497T 1945-12-28

Publications (1)

Publication Number Publication Date
FR919497A true FR919497A (en) 1947-03-10

Family

ID=9425080

Family Applications (1)

Application Number Title Priority Date Filing Date
FR919497D Expired FR919497A (en) 1945-12-28 1945-12-28 Improvement in underwater signaling devices

Country Status (1)

Country Link
FR (1) FR919497A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192554B (en) * 1954-05-03 1965-05-06 Dr Siegfried Fahrentholz Device for echo sounding for ships, especially for fishing vessels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192554B (en) * 1954-05-03 1965-05-06 Dr Siegfried Fahrentholz Device for echo sounding for ships, especially for fishing vessels

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