FR2542928B1
(en )
1985-10-04
MICROPHONE PROPAGATION TRANSFORMER
ITTO910768A1
(en )
1993-04-11
SOUND WAVE GENERATOR
KR950003046U
(en )
1995-02-16
Underwater massage equipment using sound energy of high power underwater speaker
ITMI930507A1
(en )
1994-09-17
POWER EQUIPMENT
FR2702542B1
(en )
1996-04-26
INSULATING AND SOUND ENCLOSURE OF THE DOUBLE SKIN TYPE.
KR940019725U
(en )
1994-08-22
Interface device of high frequency power generator
KR910021313U
(en )
1991-12-20
Speaker turning device of sound equipment
KR970047579U
(en )
1997-07-31
Soundproofing of portable generators
KR940027840U
(en )
1994-12-10
Surrounding device of sound equipment
KR970015746U
(en )
1997-04-28
Power cord clamping structure of electronics
KR960029917U
(en )
1996-09-17
High power speaker
KR960029930U
(en )
1996-09-17
Microphone unit of sound equipment
ITVI930119A0
(en )
1993-07-09
IMPROVED SOUND SPEAKER
KR970019613U
(en )
1997-05-26
Solenoid Manipulator of Power Equipment
KR950012886U
(en )
1995-05-17
Door cushion of sound equipment
KR970015750U
(en )
1997-04-28
Volume assembly structure of sound equipment
KR950010317U
(en )
1995-04-24
High frequency power amplifier
KR900019589U
(en )
1990-11-09
When using headphones of high power audio equipment (HEADPONE)
PL297709A1
(en )
1994-08-22
Method of focusing sound waves
KR890016851U
(en )
1989-08-19
Bass divergence device of sound equipment
KR950020844U
(en )
1995-07-26
Planar Sound Generator
KR870007643U
(en )
1987-05-13
Speaker protection circuit of sound equipment
KR960002734U
(en )
1996-01-22
Semi-Volume Knob of Sound Equipment
FI952449A0
(en )
1995-05-19
Underwater Power Unit
KR900019583U
(en )
1990-11-09
Power supply and volume control circuit for sound equipment using headphones