NL19874C - - Google Patents

Info

Publication number
NL19874C
NL19874C NL19874DA NL19874C NL 19874 C NL19874 C NL 19874C NL 19874D A NL19874D A NL 19874DA NL 19874 C NL19874 C NL 19874C
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 NL19874C publication Critical patent/NL19874C/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
    • 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)
NL19874D 1925-12-22 NL19874C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77033A US1763048A (en) 1925-12-22 1925-12-22 Loud-speaker

Publications (1)

Publication Number Publication Date
NL19874C true NL19874C (enrdf_load_stackoverflow)

Family

ID=22135690

Family Applications (1)

Application Number Title Priority Date Filing Date
NL19874D NL19874C (enrdf_load_stackoverflow) 1925-12-22

Country Status (4)

Country Link
US (1) US1763048A (enrdf_load_stackoverflow)
FR (1) FR616504A (enrdf_load_stackoverflow)
GB (1) GB263481A (enrdf_load_stackoverflow)
NL (1) NL19874C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10484768B2 (en) 2017-05-23 2019-11-19 Eric James Lundgard Speaker system

Also Published As

Publication number Publication date
US1763048A (en) 1930-06-10
FR616504A (fr) 1927-02-03
GB263481A (en) 1927-09-13

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