FR997693A - Transducteurs électro-acoustiques - Google Patents

Transducteurs électro-acoustiques

Info

Publication number
FR997693A
FR997693A FR997693DA FR997693A FR 997693 A FR997693 A FR 997693A FR 997693D A FR997693D A FR 997693DA FR 997693 A FR997693 A FR 997693A
Authority
FR
France
Prior art keywords
electro
acoustic transducers
transducers
acoustic
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)
Inventor
James Samuel Paterson Roberton
Henry Robert Meed
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR997693A publication Critical patent/FR997693A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/06—Telephone receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
FR997693D 1948-10-22 1949-10-18 Transducteurs électro-acoustiques Expired FR997693A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB997693X 1948-10-22

Publications (1)

Publication Number Publication Date
FR997693A true FR997693A (fr) 1952-01-09

Family

ID=10867374

Family Applications (3)

Application Number Title Priority Date Filing Date
FR997693D Expired FR997693A (fr) 1948-10-22 1949-10-18 Transducteurs électro-acoustiques
FR66033D Expired FR66033E (pm) 1948-10-22 1953-12-03
FR56119A Expired FR72709E (fr) 1948-10-22 1955-10-26 Transducteurs électro-acoustiques

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR66033D Expired FR66033E (pm) 1948-10-22 1953-12-03
FR56119A Expired FR72709E (fr) 1948-10-22 1955-10-26 Transducteurs électro-acoustiques

Country Status (2)

Country Link
BE (1) BE491744A (pm)
FR (3) FR997693A (pm)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE53436B1 (en) * 1981-09-16 1988-11-09 Besson A P Ltd Improvements in or relating to telephone transducers

Also Published As

Publication number Publication date
FR66033E (pm) 1952-04-24
BE491744A (pm)
FR72709E (fr) 1960-04-28

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