FR41017E - Perfectionnements aux reproducteurs de son - Google Patents

Perfectionnements aux reproducteurs de son

Info

Publication number
FR41017E
FR41017E FR41017DA FR41017E FR 41017 E FR41017 E FR 41017E FR 41017D A FR41017D A FR 41017DA FR 41017 E FR41017 E FR 41017E
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
Priority claimed from US402128A external-priority patent/US1981793A/en
Priority claimed from US501824A external-priority patent/US1918972A/en
Application filed by Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR41017E publication Critical patent/FR41017E/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR41017D 1929-10-24 1931-11-25 Perfectionnements aux reproducteurs de son Expired FR41017E (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US402128A US1981793A (en) 1929-10-24 1929-10-24 Sound reproducer
US501824A US1918972A (en) 1930-12-12 1930-12-12 Phonograph reproducer

Publications (1)

Publication Number Publication Date
FR41017E true FR41017E (fr) 1932-09-17

Family

ID=27017737

Family Applications (1)

Application Number Title Priority Date Filing Date
FR41017D Expired FR41017E (fr) 1929-10-24 1931-11-25 Perfectionnements aux reproducteurs de son

Country Status (2)

Country Link
BE (1) BE383667A (pm)
FR (1) FR41017E (pm)

Also Published As

Publication number Publication date
BE383667A (pm)

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