NL23563C - - Google Patents

Info

Publication number
NL23563C
NL23563C NL23563DA NL23563C NL 23563 C NL23563 C NL 23563C NL 23563D A NL23563D A NL 23563DA NL 23563 C NL23563 C NL 23563C
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 NL23563C publication Critical patent/NL23563C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
NL23563D 1927-10-04 NL23563C (ja�@�@)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1731460X 1927-10-04

Publications (1)

Publication Number Publication Date
NL23563C true NL23563C (ja�@�@)

Family

ID=10889413

Family Applications (1)

Application Number Title Priority Date Filing Date
NL23563D NL23563C (ja�@�@) 1927-10-04

Country Status (3)

Country Link
US (1) US1731460A (ja�@�@)
FR (1) FR661129A (ja�@�@)
NL (1) NL23563C (ja�@�@)

Also Published As

Publication number Publication date
FR661129A (fr) 1929-07-22
US1731460A (en) 1929-10-15

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