DE69230767D1
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2000-04-13
Noise reduction microphone
DK0975293T3
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2005-02-14
Noise suppression earpiece
DE69423531D1
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2000-04-27
Vibration / noise reduction device
DE69408727D1
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1998-04-09
Vibration suppression device
DK0654128T3
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1996-06-10
Vibration Damping
DE69632426D1
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2004-06-17
Acoustic echo canceller
NO944445L
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1995-05-23
sound deadening
DK0639962T3
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1999-10-25
Handsfree noise canceling headphone
KR950010477U
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1995-04-24
Vibration noise canceller of microphone
KR970020236U
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1997-05-26
Noise canceling circuit of wireless microphone receiver
KR970011434U
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1997-03-29
Sound noise canceling circuit
KR970006636U
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1997-02-21
Vibration noise suppression structure of the refrigerator
KR970048418U
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1997-07-31
Wireless speaker noise canceller
AU3976493A
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1993-11-18
Active cancellation of noise or vibrations
KR950022191U
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1995-07-28
Headphones capable of surround sound effects
KR970060124U
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1997-11-10
The structure of the microphone
KR950015898U
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1995-06-19
Noise isolation phone
KR890020190U
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1989-10-05
Noise canceling circuit of speaker phone
KR940018609U
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1994-07-30
Vibration prevention speaker
KR950028950U
(en )
1995-10-20
Anti-vibration fixed structure of TV speaker
KR950015893U
(en )
1995-06-19
Condenser microphone assembly structure of handset
KR950007613U
(en )
1995-03-21
Speaker vibration absorber
KR910012744U
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1991-07-30
Microphone noise canceling circuit of the camcorder
KR970015018U
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1997-04-28
Noise prevention structure of reel table
KR970055905U
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1997-10-13
Noise Canceling Circuit of Voice Output Equipment