FR33151E - Improvements in the making of phonograms - Google Patents

Improvements in the making of phonograms

Info

Publication number
FR33151E
FR33151E FR33151DA FR33151E FR 33151 E FR33151 E FR 33151E FR 33151D A FR33151D A FR 33151DA FR 33151 E FR33151 E FR 33151E
Authority
FR
France
Prior art keywords
phonograms
making
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.)
Active
Application number
Other languages
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 of FR33151E publication Critical patent/FR33151E/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Active 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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers
    • 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)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
FR33151D 1924-07-29 1927-11-07 Improvements in the making of phonograms Active FR33151E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US604225XA 1924-07-29 1924-07-29

Publications (1)

Publication Number Publication Date
FR33151E true FR33151E (en)

Family

ID=22029367

Family Applications (3)

Application Number Title Priority Date Filing Date
FR604225D Expired FR604225A (en) 1924-07-29 1925-07-24 Improvements in the making of phonograms
FR31317D Expired FR31317E (en) 1924-07-29 1925-12-17 Improvements in the production of phonograms
FR33151D Active FR33151E (en) 1924-07-29 1927-11-07 Improvements in the making of phonograms

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR604225D Expired FR604225A (en) 1924-07-29 1925-07-24 Improvements in the making of phonograms
FR31317D Expired FR31317E (en) 1924-07-29 1925-12-17 Improvements in the production of phonograms

Country Status (1)

Country Link
FR (3) FR604225A (en)

Also Published As

Publication number Publication date
FR31317E (en) 1927-01-28
FR604225A (en) 1926-04-30

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