FR4474E - Improvements in phonographs with nicrophone - Google Patents

Improvements in phonographs with nicrophone

Info

Publication number
FR4474E
FR4474E FR4474A FR4474DA FR4474E FR 4474 E FR4474 E FR 4474E FR 4474 A FR4474 A FR 4474A FR 4474D A FR4474D A FR 4474DA FR 4474 E FR4474 E FR 4474E
Authority
FR
France
Prior art keywords
nicrophone
phonographs
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
FR4474A
Other languages
French (fr)
Inventor
Henri-Felicien-Leon Hantz
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.)
HENRI-FELICIEN-LEON HANTZ
Original Assignee
HENRI-FELICIEN-LEON HANTZ
Publication date
Application granted granted Critical
Publication of FR4474E publication Critical patent/FR4474E/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR4474A Improvements in phonographs with nicrophone Expired FR4474E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6996T

Publications (1)

Publication Number Publication Date
FR4474E true FR4474E (en) 1905-08-26

Family

ID=8613577

Family Applications (3)

Application Number Title Priority Date Filing Date
FR4474A Expired FR4474E (en) Improvements in phonographs with nicrophone
FR6996A Expired FR6996E (en) Improvements in phonographs with microphone
FR337982A Expired FR337982A (en) 1903-12-23 Improvements in phonographs with microphone

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR6996A Expired FR6996E (en) Improvements in phonographs with microphone
FR337982A Expired FR337982A (en) 1903-12-23 Improvements in phonographs with microphone

Country Status (1)

Country Link
FR (3) FR337982A (en)

Also Published As

Publication number Publication date
FR6996E (en) 1907-04-16
FR337982A (en) 1904-05-04

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