Cheffer; Harold H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cheffer; Harold H..The latest application filed is for "low/high input voltage power supply".
- Cheffer; Harold H. - Longwood FL
| Patent | Date |
|---|---|
| Low/high input voltage power supply Grant 4,780,805 - Chewuk , et al. October 25, 1 | 1988-10-25 |
| High frequency inverter Grant 4,517,470 - Cheffer May 14, 1 | 1985-05-14 |
| Phase synchronization and control circuit Grant 4,516,035 - Rhoads , et al. May 7, 1 | 1985-05-07 |
| Snubber circuit for use in an uninterruptible power supply Grant 4,488,058 - Cheffer December 11, 1 | 1984-12-11 |
| Power MOSFET transfer switch Grant 4,484,084 - Cheffer November 20, 1 | 1984-11-20 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 