| Application number | Title of the application | Filing Date | Status |
|---|
| 07/562312 | ELECTRONIC MUSICAL INSTRUMENT WITH REVERBERATION EFECT | Aug 2, 1990 | Abandoned |
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| 07/553978 | ELECTRONIC MUSICAL INSTRUMENT | Jul 15, 1990 | Abandoned |
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| 07/537024 | ELECTRONIC MUSICAL INSTRUMENT HAVING MULTIPLE PERFORMANCE FUNCTIONS | Jun 10, 1990 | Abandoned |
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