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EP3010012A1
(en)
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Device for vibrating a stringed instrument
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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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TW201136332A
(en)
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Loudspeaker with magnetic element fixed on the drum membrane
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BE425739A
(en:Method)
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WO2020212174A1
(en)
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Bicycle bell
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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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US2251635A
(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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US2590500A
(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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US273264A
(en)
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Telegraph-sounder |
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BE675627A
(en:Method)
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BE430526A
(en:Method)
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US1016035A
(en)
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Sound-producing device.
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KR102148292B1
(ko)
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차량용 출몰형 스피커
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US3487811A
(en)
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Ringer volume control
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US3172100A
(en)
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Ringer clapper assembly
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