FR631211A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR631211A
FR631211A FR631211DA FR631211A FR 631211 A FR631211 A FR 631211A FR 631211D A FR631211D A FR 631211DA FR 631211 A FR631211 A FR 631211A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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.)
HOPKINS CORP
Original Assignee
HOPKINS 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 HOPKINS CORP filed Critical HOPKINS CORP
Application granted granted Critical
Publication of FR631211A publication Critical patent/FR631211A/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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR631211D 1926-08-23 1927-03-21 Loud speaker Expired FR631211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US631211TA 1926-08-23 1926-08-23

Publications (1)

Publication Number Publication Date
FR631211A true FR631211A (en) 1927-12-16

Family

ID=1541490

Family Applications (1)

Application Number Title Priority Date Filing Date
FR631211D Expired FR631211A (en) 1926-08-23 1927-03-21 Loud speaker

Country Status (1)

Country Link
FR (1) FR631211A (en)

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