BE389124A - - Google Patents

Info

Publication number
BE389124A
BE389124A BE389124DA BE389124A BE 389124 A BE389124 A BE 389124A BE 389124D A BE389124D A BE 389124DA BE 389124 A BE389124 A BE 389124A
Authority
BE
Belgium
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 BE389124A publication Critical patent/BE389124A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Valves (AREA)
  • Golf Clubs (AREA)
BE389124D 1931-06-10 BE389124A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US543341A US1935185A (en) 1931-06-10 1931-06-10 Sound producing device

Publications (1)

Publication Number Publication Date
BE389124A true BE389124A (enrdf_load_html_response)

Family

ID=24167593

Family Applications (1)

Application Number Title Priority Date Filing Date
BE389124D BE389124A (enrdf_load_html_response) 1931-06-10

Country Status (4)

Country Link
US (1) US1935185A (enrdf_load_html_response)
BE (1) BE389124A (enrdf_load_html_response)
DE (1) DE651418C (enrdf_load_html_response)
GB (1) GB388269A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936480B2 (ja) * 1976-02-10 1984-09-04 ソニー株式会社 スピ−カ装置

Also Published As

Publication number Publication date
US1935185A (en) 1933-11-14
DE651418C (de) 1937-10-13
GB388269A (en) 1933-02-23

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