FR704651A - Perfectionnements aux reproducteurs de son - Google Patents

Perfectionnements aux reproducteurs de son

Info

Publication number
FR704651A
FR704651A FR704651DA FR704651A FR 704651 A FR704651 A FR 704651A FR 704651D A FR704651D A FR 704651DA FR 704651 A FR704651 A FR 704651A
Authority
FR
France
Prior art keywords
breeders
bran
bran breeders
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)
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR704651A publication Critical patent/FR704651A/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
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Moving Of Heads (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
FR704651D 1929-10-24 1930-10-20 Perfectionnements aux reproducteurs de son Expired FR704651A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US402128A US1981793A (en) 1929-10-24 1929-10-24 Sound reproducer

Publications (1)

Publication Number Publication Date
FR704651A true FR704651A (fr) 1931-05-23

Family

ID=23590646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR704651D Expired FR704651A (fr) 1929-10-24 1930-10-20 Perfectionnements aux reproducteurs de son

Country Status (6)

Country Link
US (1) US1981793A (enrdf_load_stackoverflow)
BE (1) BE374410A (enrdf_load_stackoverflow)
DE (1) DE599965C (enrdf_load_stackoverflow)
FR (1) FR704651A (enrdf_load_stackoverflow)
GB (1) GB363449A (enrdf_load_stackoverflow)
NL (1) NL33960C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640888A (en) * 1949-11-07 1953-06-02 Edward E Combs Phonograph pickup

Also Published As

Publication number Publication date
BE374410A (enrdf_load_stackoverflow)
US1981793A (en) 1934-11-20
NL33960C (enrdf_load_stackoverflow)
DE599965C (de) 1934-07-12
GB363449A (en) 1931-12-24

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