FR847067A - Perfectionnements aux laryngaphones - Google Patents

Perfectionnements aux laryngaphones

Info

Publication number
FR847067A
FR847067A FR847067DA FR847067A FR 847067 A FR847067 A FR 847067A FR 847067D A FR847067D A FR 847067DA FR 847067 A FR847067 A FR 847067A
Authority
FR
France
Prior art keywords
laryngaphones
enhancements
laryngaphones enhancements
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)
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.)
RADIOELECTRIQUE SIR SOC IND
Original Assignee
RADIOELECTRIQUE SIR SOC IND
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 RADIOELECTRIQUE SIR SOC IND filed Critical RADIOELECTRIQUE SIR SOC IND
Application granted granted Critical
Publication of FR847067A publication Critical patent/FR847067A/fr
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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/14—Throat mountings for microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR847067D 1938-06-04 1938-06-04 Perfectionnements aux laryngaphones Expired FR847067A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR847067T 1938-06-04

Publications (1)

Publication Number Publication Date
FR847067A true FR847067A (fr) 1939-10-03

Family

ID=9313631

Family Applications (1)

Application Number Title Priority Date Filing Date
FR847067D Expired FR847067A (fr) 1938-06-04 1938-06-04 Perfectionnements aux laryngaphones

Country Status (1)

Country Link
FR (1) FR847067A (fr)

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