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JP5849172B2
(ja)
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弦楽器を加振するための装置
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JP2002171595A
(ja)
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振動スピーカ
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KR102010926B1
(ko)
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패널 가진형 스피커
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CH630252A5
(en)
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Portable apparatus for communication via the skin
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US2209382A
(en)
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Telephone ringer
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BE425739A
(enrdf_load_stackoverflow)
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FR2570238A1
(fr)
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Vibrateur electromecanique audio-frequence, destine a la reproduction de vibrations ressenties par le corps humain
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EP3956206A1
(en)
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Bicycle bell
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US2659998A
(en)
|
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Magnet-controlled sit-up pup
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US2412610A
(en)
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Audible signaling device
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US2251635A
(en)
|
|
Telephone signaling apparatus
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|
US5942734A
(en)
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Noise-attenuating shielding unit and method for loudspeakers
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|
FR2778267A1
(fr)
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Bouton d'appel d'ascenseur pour non-voyants
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US4057688A
(en)
|
|
Intercom embodying tap transducers
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US2247641A
(en)
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|
Electric chime
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US2225558A
(en)
|
|
Signaling device
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US2590500A
(en)
|
|
Telephone ringer
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US2649826A
(en)
|
|
Electrically operated carillon
|
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US2385339A
(en)
|
|
Signaling device
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US1852773A
(en)
|
|
Electromagnetic signaling device
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US854780A
(en)
|
|
Combined annunciator and ringer for telephone-lines.
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BE675627A
(enrdf_load_stackoverflow)
|
|
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BE430526A
(enrdf_load_stackoverflow)
|
|
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US1016035A
(en)
|
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Sound-producing device.
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US3174121A
(en)
|
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Electrical signal delay device
|