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Yukio Tsuchiya
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Tokorozawa, JP
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last 30 patents
Information
Patent Grant
Speaker system
Patent number
5,115,474
Issue date
May 19, 1992
Pioneer Electronic Corporation
Yukio Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wall-mounted resin speaker cabinet
Patent number
4,640,381
Issue date
Feb 3, 1987
Pioneer Electronic Corporation
Yukio Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Coaxial type multi-way planar diaphragm loudspeaker system
Patent number
4,357,498
Issue date
Nov 2, 1982
Pioneer Electronic Corporation
Yukio Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Magnetic circuit for planar diaphragm type loudspeaker
Patent number
4,334,127
Issue date
Jun 8, 1982
Pioneer Electronic Corporation
Kunihiko Shimada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Coaxial multi-way planar diaphragm type loudspeaker system
Patent number
4,328,400
Issue date
May 4, 1982
Pioneer Electronic Corporation
Kunihiko Shimada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Driver unit for planar diaphragm type loudspeaker
Patent number
4,323,737
Issue date
Apr 6, 1982
Pioneer Electronic Corporation
Kunihiko Shimada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Voice coil bobbin for planar diaphragm
Patent number
4,322,584
Issue date
Mar 30, 1982
Pioneer Electronic Corporation
Kunihiko Shimada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Loudspeaker driver unit
Patent number
4,143,738
Issue date
Mar 13, 1979
Pioneer Electronic Corporation
Jiro Nakazono
H04 - ELECTRIC COMMUNICATION TECHNIQUE