GB283210A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
GB283210A
GB283210A GB31/28A GB3128A GB283210A GB 283210 A GB283210 A GB 283210A GB 31/28 A GB31/28 A GB 31/28A GB 3128 A GB3128 A GB 3128A GB 283210 A GB283210 A GB 283210A
Authority
GB
United Kingdom
Prior art keywords
board
sound
diaphragm
loud
glued
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
GB31/28A
Other languages
English (en)
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
Publication of GB283210A publication Critical patent/GB283210A/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)
  • Diaphragms For Electromechanical Transducers (AREA)
GB31/28A 1927-01-07 1928-01-02 Loud speaker Expired GB283210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US159553A US1763053A (en) 1927-01-07 1927-01-07 Loud-speaker

Publications (1)

Publication Number Publication Date
GB283210A true GB283210A (en) 1928-06-28

Family

ID=22573030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31/28A Expired GB283210A (en) 1927-01-07 1928-01-02 Loud speaker

Country Status (3)

Country Link
US (1) US1763053A (fr)
FR (1) FR646683A (fr)
GB (1) GB283210A (fr)

Also Published As

Publication number Publication date
US1763053A (en) 1930-06-10
FR646683A (fr) 1928-11-14

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