FR348401A - Telephone receiver - Google Patents

Telephone receiver

Info

Publication number
FR348401A
FR348401A FR348401A FR348401DA FR348401A FR 348401 A FR348401 A FR 348401A FR 348401 A FR348401 A FR 348401A FR 348401D A FR348401D A FR 348401DA FR 348401 A FR348401 A FR 348401A
Authority
FR
France
Prior art keywords
telephone receiver
telephone
receiver
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
FR348401A
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.)
IE)
Original Assignee
IE)
Filing date
Publication date
Application filed by IE) filed Critical IE)
Application granted granted Critical
Publication of FR348401A publication Critical patent/FR348401A/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
    • H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
    • 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
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR348401A 1904-02-08 Telephone receiver Expired FR348401A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR4091T

Publications (1)

Publication Number Publication Date
FR348401A true FR348401A (en) 1905-04-12

Family

ID=8594358

Family Applications (2)

Application Number Title Priority Date Filing Date
FR4091A Expired FR4091E (en) Telephone receiver
FR348401A Expired FR348401A (en) 1904-02-08 Telephone receiver

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR4091A Expired FR4091E (en) Telephone receiver

Country Status (1)

Country Link
FR (2) FR348401A (en)

Also Published As

Publication number Publication date
FR4091E (en) 1905-05-22

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