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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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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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TW201136332A
(en)
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Loudspeaker with magnetic element fixed on the drum membrane
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EP3956206A1
(en)
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Bicycle bell
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BE425739A
(enrdf_load_html_response)
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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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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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(en)
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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)
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Intercom embodying tap transducers
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US2270085A
(en)
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Chime signal
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US2247641A
(en)
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Electric chime
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US2225558A
(en)
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Signaling device
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(en)
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Telephone ringer
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US2649826A
(en)
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Electrically operated carillon
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US1852773A
(en)
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Electromagnetic signaling device
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US2548062A
(en)
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Bone conducting receiver with electromagnetic vibrator
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US273264A
(en)
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Telegraph-sounder |
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US854780A
(en)
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Combined annunciator and ringer for telephone-lines.
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BE675627A
(enrdf_load_html_response)
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KR102148292B1
(ko)
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차량용 출몰형 스피커
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