NL22278C - - Google Patents

Info

Publication number
NL22278C
NL22278C NL22278DA NL22278C NL 22278 C NL22278 C NL 22278C NL 22278D A NL22278D A NL 22278DA NL 22278 C NL22278 C NL 22278C
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.)
Publication of NL22278C publication Critical patent/NL22278C/xx

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
    • H04R9/06—Loudspeakers
    • 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)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
NL22278D 1924-03-27 NL22278C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US702455A US1795214A (en) 1924-03-27 1924-03-27 Sound-reproducing apparatus

Publications (1)

Publication Number Publication Date
NL22278C true NL22278C (xx)

Family

ID=24821287

Family Applications (1)

Application Number Title Priority Date Filing Date
NL22278D NL22278C (xx) 1924-03-27

Country Status (2)

Country Link
US (1) US1795214A (xx)
NL (1) NL22278C (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770681A (en) * 1951-10-23 1956-11-13 Rola Company Inc Loud-speaker

Also Published As

Publication number Publication date
US1795214A (en) 1931-03-03

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