| Application number | Title of the application | Filing Date | Status |
|---|
| 06/673048 | REVERBERATION TONE GENERATING APPARATUS | Nov 18, 1984 | Abandoned |
| 06/671353 | SOUND SYNTHESIZING CIRCUIT | Nov 13, 1984 | Abandoned |
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| 06/665110 | AUDIO SPEAKER SYSTEM FOR AUTOMOTIVE VEHICLE | Oct 25, 1984 | Issued |
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| 06/654053 | ELECTRONIC MUSICAL INSTRUMENT WITH AUTOMATIC PERFORMING FUNCTION | Sep 23, 1984 | Abandoned |
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| 06/643076 | REVERBERATION IMPARTING DEVICE | Aug 21, 1984 | Abandoned |
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