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

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/42Combinations 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 (en:Method)

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 (en:Method)

Family

ID=24167593

Family Applications (1)

Application Number Title Priority Date Filing Date
BE389124D BE389124A (en:Method) 1931-06-10

Country Status (4)

Country Link
US (1) US1935185A (en:Method)
BE (1) BE389124A (en:Method)
DE (1) DE651418C (en:Method)
GB (1) GB388269A (en:Method)

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

Similar Documents

Publication Publication Date Title
BE377446A (en:Method)
NL35366C (en:Method)
BE376552A (en:Method)
BE375242A (en:Method)
BE375720A (en:Method)
BE376369A (en:Method)
BE376486A (en:Method)
NL36640C (en:Method)
BE376624A (en:Method)
BE376809A (en:Method)
BE376961A (en:Method)
BE377041A (en:Method)
BE377073A (en:Method)
BE377126A (en:Method)
BE377219A (en:Method)
BE377275A (en:Method)
BE377461A (en:Method)
BE377475A (en:Method)
BE386128A (en:Method)
BE377518A (en:Method)
BE377652A (en:Method)
BE377673A (en:Method)
BE377748A (en:Method)
BE377906A (en:Method)
BE377922A (en:Method)