FR470246A - Reinforcing receiving device for hearing devices - Google Patents

Reinforcing receiving device for hearing devices

Info

Publication number
FR470246A
FR470246A FR470246DA FR470246A FR 470246 A FR470246 A FR 470246A FR 470246D A FR470246D A FR 470246DA FR 470246 A FR470246 A FR 470246A
Authority
FR
France
Prior art keywords
receiving device
hearing devices
reinforcing receiving
reinforcing
hearing
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
Louis-Charles-Philippe Jardin
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.)
LOUIS-CHARLES-PHILIPPE JARDIN
Original Assignee
LOUIS-CHARLES-PHILIPPE JARDIN
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 LOUIS-CHARLES-PHILIPPE JARDIN filed Critical LOUIS-CHARLES-PHILIPPE JARDIN
Application granted granted Critical
Publication of FR470246A publication Critical patent/FR470246A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR470246D 1913-06-10 1913-06-10 Reinforcing receiving device for hearing devices Expired FR470246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR470246T 1913-06-10

Publications (1)

Publication Number Publication Date
FR470246A true FR470246A (en) 1914-08-28

Family

ID=1508628

Family Applications (1)

Application Number Title Priority Date Filing Date
FR470246D Expired FR470246A (en) 1913-06-10 1913-06-10 Reinforcing receiving device for hearing devices

Country Status (1)

Country Link
FR (1) FR470246A (en)

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