FR568008A - Improvements to sound reception devices - Google Patents

Improvements to sound reception devices

Info

Publication number
FR568008A
FR568008A FR568008DA FR568008A FR 568008 A FR568008 A FR 568008A FR 568008D A FR568008D A FR 568008DA FR 568008 A FR568008 A FR 568008A
Authority
FR
France
Prior art keywords
reception devices
sound reception
sound
devices
reception
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 FR568008A publication Critical patent/FR568008A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR568008D 1923-06-27 1923-06-27 Improvements to sound reception devices Expired FR568008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR568008T 1923-06-27

Publications (1)

Publication Number Publication Date
FR568008A true FR568008A (en) 1924-03-13

Family

ID=8948200

Family Applications (1)

Application Number Title Priority Date Filing Date
FR568008D Expired FR568008A (en) 1923-06-27 1923-06-27 Improvements to sound reception devices

Country Status (1)

Country Link
FR (1) FR568008A (en)

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