FR478725A - Disposition de diaphragme - Google Patents

Disposition de diaphragme

Info

Publication number
FR478725A
FR478725A FR478725A FR478725DA FR478725A FR 478725 A FR478725 A FR 478725A FR 478725 A FR478725 A FR 478725A FR 478725D A FR478725D A FR 478725DA FR 478725 A FR478725 A FR 478725A
Authority
FR
France
Prior art keywords
diaphragm
layout
diaphragm layout
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
FR478725A
Other languages
English (en)
Inventor
Eric Magnus Campbell Tigerstedt
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.)
ERIC MAGNUS CAMPBELL TIGERSTED
Original Assignee
ERIC MAGNUS CAMPBELL TIGERSTED
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 ERIC MAGNUS CAMPBELL TIGERSTED filed Critical ERIC MAGNUS CAMPBELL TIGERSTED
Application granted granted Critical
Publication of FR478725A publication Critical patent/FR478725A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR478725A 1914-05-20 1915-05-17 Disposition de diaphragme Expired FR478725A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE478725X 1914-05-20

Publications (1)

Publication Number Publication Date
FR478725A true FR478725A (fr) 1916-01-05

Family

ID=1516200

Family Applications (1)

Application Number Title Priority Date Filing Date
FR478725A Expired FR478725A (fr) 1914-05-20 1915-05-17 Disposition de diaphragme

Country Status (1)

Country Link
FR (1) FR478725A (fr)

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