Ringland; William L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ringland; William L..The latest application filed is for "plural electric motors driving common load and having interconnections for load control".
- Ringland; William L. - Haugen WI
- Ringland; William L. - Greendale WI
| Patent | Date |
|---|---|
| Plural electric motors driving common load and having interconnections for load control Grant 4,208,620 - Ringland June 17, 1 | 1980-06-17 |
| Circuit For Starting Electric Motor From Standstill With Maximum Torque Grant 3,845,372 - Ringland , et al. October 29, 1 | 1974-10-29 |
| Group Blanking Control For Cycloconverter Grant 3,832,624 - Gilmore , et al. August 27, 1 | 1974-08-27 |
| Electric Powered Wheel Grant 3,812,928 - Rockwell , et al. May 28, 1 | 1974-05-28 |
| Electrically Driven Vehicle Steered By Control Of Power And Speed Of Tractive Elements Grant 3,720,863 - Ringland , et al. March 13, 1 | 1973-03-13 |
| Rotary Inductor Grant 3,641,467 - Ringland , et al. February 8, 1 | 1972-02-08 |
| Vehicle Electric Motor Drive System Grant 3,584,276 - Ringland , et al. June 8, 1 | 1971-06-08 |
| Vehicle Driven By Synchronous Motors Grant 3,577,050 - Ringland , et al. May 4, 1 | 1971-05-04 |
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