| Application number | Title of the application | Filing Date | Status |
|---|
| 07/198851 | ARRANGEMANT FOR CONNECTING PLURAL SELF-COMMULATED VOLTAGE TYPE INVERTERS TO A UTILITY GRID | May 25, 1988 | Abandoned |
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| 07/174148 | SYNTHESIS OF LOAD-INDEPENDENT SWITCH-MODE POWER COVERTRS AND DRIVE SYSTEM | Mar 27, 1988 | Abandoned |
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| 07/172598 | PWM POWER CONVERTER | Mar 23, 1988 | Abandoned |
| 07/164281 | HYBRID HIGH SPEED VOLTAGE REGULATOR WITH REDUCTION OF MILLER EFFECT | Mar 3, 1988 | Abandoned |
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