Johnson; Stephen D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson; Stephen D..The latest application filed is for "deployable propeller".
- Johnson; Stephen D. - Laguna Niguel CA
- Johnson; Stephen D. - El Cajon CA
- Johnson; Stephen D. - Hanover MI
- Johnson; Stephen D. - Sheridan IL
- Johnson; Stephen D. - Denton TX
- Johnson; Stephen D. - Burlington IA
Trademarks
| Patent | Date |
|---|---|
| Collapsible ducted fan unmanned aerial system Grant 9,975,633 - Johnson , et al. May 22, 2 | 2018-05-22 |
| Deployable propeller Grant 9,937,999 - Wainfan , et al. April 10, 2 | 2018-04-10 |
| Deployable Propeller App 20160347441 - WAINFAN; Barnaby S. ; et al. | 2016-12-01 |
| Compaction wheel system and method Grant 7,500,804 - Nelson , et al. March 10, 2 | 2009-03-10 |
| Compaction wheel system and method App 20070248413 - Nelson; Jimmie P. ; et al. | 2007-10-25 |
| Hydraulic pump Grant 7,220,111 - Johnson May 22, 2 | 2007-05-22 |
| Stringing popcorn to make a garland App 20060233920 - Johnson; Stephen D. | 2006-10-19 |
| Hydraulic pump App 20060024187 - Johnson; Stephen D. | 2006-02-02 |
| Strung popcorn seeds and method concerning same App 20040166251 - Johnson, Stephen D. | 2004-08-26 |
| Electronicallly controlled ackerman steering Grant 6,283,483 - Johnson , et al. September 4, 2 | 2001-09-04 |
| Releasable boom lock Grant 4,278,394 - Johnson July 14, 1 | 1981-07-14 |
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