FR616419A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR616419A
FR616419A FR616419DA FR616419A FR 616419 A FR616419 A FR 616419A FR 616419D A FR616419D A FR 616419DA FR 616419 A FR616419 A FR 616419A
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 FR616419A publication Critical patent/FR616419A/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
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR616419D 1925-06-11 1926-05-20 Loud speaker Expired FR616419A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36563A US1630011A (en) 1925-06-11 1925-06-11 Loud speaker

Publications (1)

Publication Number Publication Date
FR616419A true FR616419A (en) 1927-02-02

Family

ID=21889291

Family Applications (1)

Application Number Title Priority Date Filing Date
FR616419D Expired FR616419A (en) 1925-06-11 1926-05-20 Loud speaker

Country Status (6)

Country Link
US (1) US1630011A (en)
BE (1) BE334368A (en)
DE (1) DE509370C (en)
FR (1) FR616419A (en)
GB (1) GB253486A (en)
NL (1) NL20912C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6510919B1 (en) 2000-08-30 2003-01-28 Awi Licensing Company Facing system for a flat panel radiator

Also Published As

Publication number Publication date
DE509370C (en) 1930-10-08
GB253486A (en) 1927-07-13
BE334368A (en)
NL20912C (en)
US1630011A (en) 1927-05-24

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