Ligman; James R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ligman; James R..The latest application filed is for "motor control system for variable speed induction motors".
- Ligman; James R. - Santa Barbara CA
| Patent | Date |
|---|---|
| Motor control system for variable speed induction motors Grant 5,828,200 - Ligman , et al. October 27, 1 | 1998-10-27 |
| Carpet cleaner unit with adjustable power control Grant 5,555,595 - Ligman September 17, 1 | 1996-09-17 |
| Downhole transducer systems Grant 4,658,897 - Kompanek , et al. April 21, 1 | 1987-04-21 |
| Casing tuned downhole tool Grant 4,512,402 - Kompanek , et al. April 23, 1 | 1985-04-23 |
| Entry system Grant 4,206,491 - Ligman , et al. June 3, 1 | 1980-06-03 |
| Safety circuit for video diver Grant 4,009,419 - Ligman February 22, 1 | 1977-02-22 |
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