Steffen; Ronald W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Steffen; Ronald W..The latest application filed is for "seed sensor with lightpipe photodetect assembly".
- Steffen; Ronald W. - Springfield IL
- Steffen; Ronald W - Springfield IL
- Steffen; Ronald W. - Chatham IL
| Patent | Date |
|---|---|
| Seed sensor with lightpipe photodetect assembly Grant 10,412,880 - Steffen , et al. Sept | 2019-09-17 |
| Seed Sensor With Lightpipe Photodetect Assembly App 20180359911 - Steffen; Ronald W. ; et al. | 2018-12-20 |
| Seed sensor with lightpipe photodetect assembly Grant 9,913,425 - Steffen , et al. March 13, 2 | 2018-03-13 |
| Seed Sensor With Lightpipe Photodetect Assembly App 20160374263 - Steffen; Ronald W. ; et al. | 2016-12-29 |
| Synchronization of a twin row planting system Grant 9,320,192 - Steffen , et al. April 26, 2 | 2016-04-26 |
| Synchronization Of A Twin Row Planting System App 20150134210 - Steffen; Ronald W. ; et al. | 2015-05-14 |
| Silverware detector Grant 6,667,689 - Steffen , et al. December 23, 2 | 2003-12-23 |
| Universal modular control system for mobile material distribution apparatus Grant 5,897,600 - Elmore , et al. April 27, 1 | 1999-04-27 |
| Boom configuration monitoring and control system for mobile material distribution apparatus Grant 5,884,205 - Elmore , et al. March 16, 1 | 1999-03-16 |
| Solenoid circuit Grant 5,475,561 - Goeckner , et al. December 12, 1 | 1995-12-12 |
| Transmission controller Grant 5,082,097 - Goeckner , et al. January 21, 1 | 1992-01-21 |
| Wheel interference monitor Grant 4,087,783 - Steffen May 2, 1 | 1978-05-02 |
| Monitor system for agricultural harvesting apparatus Grant 4,068,223 - Steffen January 10, 1 | 1978-01-10 |
| Liquid spreader control system Grant 4,052,003 - Steffen October 4, 1 | 1977-10-04 |
| Controlled population monitor Grant 3,912,121 - Steffen October 14, 1 | 1975-10-14 |
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