FR770969A - Improvements to magnetic devices - Google Patents

Improvements to magnetic devices

Info

Publication number
FR770969A
FR770969A FR770969DA FR770969A FR 770969 A FR770969 A FR 770969A FR 770969D A FR770969D A FR 770969DA FR 770969 A FR770969 A FR 770969A
Authority
FR
France
Prior art keywords
magnetic devices
magnetic
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
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.)
DARWINS Ltd
Original Assignee
DARWINS Ltd
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 DARWINS Ltd filed Critical DARWINS Ltd
Application granted granted Critical
Publication of FR770969A publication Critical patent/FR770969A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR770969D 1933-04-05 1934-03-30 Improvements to magnetic devices Expired FR770969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB770969X 1933-04-05

Publications (1)

Publication Number Publication Date
FR770969A true FR770969A (en) 1934-09-27

Family

ID=10497272

Family Applications (1)

Application Number Title Priority Date Filing Date
FR770969D Expired FR770969A (en) 1933-04-05 1934-03-30 Improvements to magnetic devices

Country Status (1)

Country Link
FR (1) FR770969A (en)

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