FR1238449A - Improvements to electro-acoustic devices - Google Patents

Improvements to electro-acoustic devices

Info

Publication number
FR1238449A
FR1238449A FR799288A FR799288A FR1238449A FR 1238449 A FR1238449 A FR 1238449A FR 799288 A FR799288 A FR 799288A FR 799288 A FR799288 A FR 799288A FR 1238449 A FR1238449 A FR 1238449A
Authority
FR
France
Prior art keywords
electro
acoustic devices
acoustic
devices
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
FR799288A
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.)
ELECTRO BEL
Original Assignee
ELECTRO BEL
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 ELECTRO BEL filed Critical ELECTRO BEL
Priority to FR799288A priority Critical patent/FR1238449A/en
Application granted granted Critical
Publication of FR1238449A publication Critical patent/FR1238449A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • 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
FR799288A 1959-07-03 1959-07-03 Improvements to electro-acoustic devices Expired FR1238449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR799288A FR1238449A (en) 1959-07-03 1959-07-03 Improvements to electro-acoustic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR799288A FR1238449A (en) 1959-07-03 1959-07-03 Improvements to electro-acoustic devices

Publications (1)

Publication Number Publication Date
FR1238449A true FR1238449A (en) 1960-08-12

Family

ID=8716788

Family Applications (1)

Application Number Title Priority Date Filing Date
FR799288A Expired FR1238449A (en) 1959-07-03 1959-07-03 Improvements to electro-acoustic devices

Country Status (1)

Country Link
FR (1) FR1238449A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062201A1 (en) * 1981-04-01 1982-10-13 Zellweger Uster Ag Electro-acoustic transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062201A1 (en) * 1981-04-01 1982-10-13 Zellweger Uster Ag Electro-acoustic transducer

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