NL28724C - - Google Patents

Info

Publication number
NL28724C
NL28724C NL28724DA NL28724C NL 28724 C NL28724 C NL 28724C NL 28724D A NL28724D A NL 28724DA NL 28724 C NL28724 C NL 28724C
Authority
NL
Netherlands
Application number
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 of NL28724C publication Critical patent/NL28724C/xx
Priority claimed from GB1086027A external-priority patent/GB294285A/en
Application filed filed Critical
Priority to NL121436A priority Critical patent/NL62438C/en
Priority to BE477922D priority patent/BE477922A/en
Priority to LU28724D priority patent/LU28724A1/en

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
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
NL28724D 1927-04-22 1945-10-08 NL28724C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL121436A NL62438C (en) 1945-10-08 1945-10-08 Device for manufacturing a profiled object of concrete or material with similar properties
BE477922D BE477922A (en) 1945-10-08 1947-12-06 Device for manufacturing a profiled object of concrete or material with similar properties
LU28724D LU28724A1 (en) 1945-10-08 1947-12-17 Device for the manufacture of profiled parts in concrete or other material having analogous properties

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1086027A GB294285A (en) 1928-01-07 1927-04-22 Improvements in or relating to electro-acoustic devices
GB60228A GB309226A (en) 1928-01-07 1928-01-07 Improvements in or relating to acoustic devices

Publications (1)

Publication Number Publication Date
NL28724C true NL28724C (en)

Family

ID=26236054

Family Applications (1)

Application Number Title Priority Date Filing Date
NL28724D NL28724C (en) 1927-04-22 1945-10-08

Country Status (4)

Country Link
US (2) US2002189A (en)
BE (2) BE350724A (en)
FR (2) FR653092A (en)
NL (1) NL28724C (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469773A (en) * 1934-06-04 1949-05-10 Jensen Mfg Company Loud-speaker diaphragm support member
US2513171A (en) * 1948-11-26 1950-06-27 Fauthal A Hassan Loud-speaker diaphragm with stiffening struts
GB698695A (en) * 1951-01-11 1953-10-21 Lustraphone Ltd Improvements in or relating to microphones
US4239943A (en) * 1977-11-17 1980-12-16 Cerwin Vega, Inc. Adjustable dual spider for a loudspeaker
US4373607A (en) * 1979-08-03 1983-02-15 Miller Charles D Loudspeaker cone stiffeners
US5123053A (en) * 1990-07-11 1992-06-16 Harman International Industries, Incorporated Loudspeaker suspension
US6611604B1 (en) * 1999-10-22 2003-08-26 Stillwater Designs & Audio, Inc. Ultra low frequency transducer and loud speaker comprising same

Also Published As

Publication number Publication date
US2002190A (en) 1935-05-21
US2002189A (en) 1935-05-21
FR653092A (en) 1929-03-15
BE357157A (en)
FR666922A (en) 1929-10-08
BE350724A (en)

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