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FR2620893A1
(fr)
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Transducteur acoustique a selection de frequences
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JP6082075B2
(ja)
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音響的性能が改善された音発生腕時計用ケース
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US4607186A
(en)
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Ultrasonic transducer with a piezoelectric element
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EP0598875B1
(fr)
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Dispositif de nettoyage a commande automatique, notamment pour pare-brise de vehicule automobile
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US6259188B1
(en)
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Piezoelectric vibrational and acoustic alert for a personal communication device
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US5955824A
(en)
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Reduced size electro-acoustic transducer with improved terminal
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BE538293A
(enrdf_load_html_response)
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FR2556165A1
(fr)
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Reseau d'hydrophones en polymere a couches multiples
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KR20030071626A
(ko)
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초음파 탐촉자 시스템
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JP5310975B2
(ja)
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球面弾性表面波センサ
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FR2466903A1
(fr)
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Transducteur piezoelectrique reglable pour montre
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US8179024B2
(en)
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Piezoelectric transducer device
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CN115968549A
(zh)
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一种传声器
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JPS6133508B2
(enrdf_load_html_response)
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US4440504A
(en)
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Electronic timepiece including a piezoelectric alarm
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JP7351792B2
(ja)
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収音装置
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US1356156A
(en)
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Telephonic receiver
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US2404764A
(en)
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Sound receiver
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US1821933A
(en)
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Sound regenerating apparatus
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US2806913A
(en)
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Sound pressure receiver
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US1377521A
(en)
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Serge otjlianine |
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JP3491227B2
(ja)
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静電型電気音響変換器
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US1708938A
(en)
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High-frequency sound signaling
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BE408767A
(enrdf_load_html_response)
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BE452029A
(enrdf_load_html_response)
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