Simpson; Dennis D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Simpson; Dennis D..The latest application filed is for "dump cart".
- Simpson; Dennis D. - Plymouth MN
- Simpson; Dennis D. - Spencer IA
| Patent | Date |
|---|---|
| Stepladder folding leg Grant 11,391,089 - Wernberg , et al. July 19, 2 | 2022-07-19 |
| Dump Cart App 20220194453 - Foley; Joseph P. ; et al. | 2022-06-23 |
| Step Ladder App 20220162910 - Skubic; Jeff ; et al. | 2022-05-26 |
| Dump cart Grant 11,299,187 - Foley , et al. April 12, 2 | 2022-04-12 |
| Step ladder Grant 11,220,862 - Skubic , et al. January 11, 2 | 2022-01-11 |
| Stepladder Tray App 20210246725 - Wernberg; Benjamin M. ; et al. | 2021-08-12 |
| Work Platform App 20210164243 - Foley; Joseph P. ; et al. | 2021-06-03 |
| Cart tub Grant D897,680 - Foley , et al. October 6, 2 | 2020-10-06 |
| Cart tub Grant D897,679 - Foley , et al. October 6, 2 | 2020-10-06 |
| Dump Cart App 20200247447 - Kind Code | 2020-08-06 |
| Step Ladder App 20200224492 - Skubic; Jeff ; et al. | 2020-07-16 |
| Step ladder Grant 10,648,234 - Skubic , et al. | 2020-05-12 |
| Stepladder Folding Leg App 20200131850 - Wernberg; Benjamin M. ; et al. | 2020-04-30 |
| Top Cap For Multi-position Ladder App 20200115961 - Foley; Joseph P. ; et al. | 2020-04-16 |
| Dumping cart Grant D876,744 - Wernberg , et al. Feb | 2020-02-25 |
| Hinge for a multi-position ladder Grant D860,476 - Foley , et al. Sept | 2019-09-17 |
| Ladder rail Grant D855,833 - Foley , et al. | 2019-08-06 |
| Work Platform App 20190226217 - Foley; Joseph P. ; et al. | 2019-07-25 |
| Step ladder Grant D840,055 - Skubic , et al. Fe | 2019-02-05 |
| Hinged tray for ladder or step stool Grant 10,138,680 - Williams , et al. Nov | 2018-11-27 |
| Adjustable Hinge For A Multi-position Ladder App 20180274296 - Foley; Joseph P. ; et al. | 2018-09-27 |
| Log cart Grant D826,507 - Wernberg , et al. August 21, 2 | 2018-08-21 |
| Cart Grant D819,917 - Simpson , et al. June 5, 2 | 2018-06-05 |
| Latch for ladder or step stool Grant 9,869,125 - Simpson , et al. January 16, 2 | 2018-01-16 |
| Latch For Ladder Or Step Stool App 20170321482 - Simpson; Dennis D. ; et al. | 2017-11-09 |
| Foldable work platform device Grant 9,752,334 - Foley , et al. September 5, 2 | 2017-09-05 |
| Foldable Work Platform App 20170044780 - Foley; Joseph P. ; et al. | 2017-02-16 |
| Hinged Tray For Ladder Or Step Stool App 20160348434 - Williams; Benjamin P. ; et al. | 2016-12-01 |
| Step Ladder App 20150308190 - Skubic; Jeff ; et al. | 2015-10-29 |
| Step stool Grant D710,031 - Simpson , et al. July 29, 2 | 2014-07-29 |
| Folding Stool App 20140131138 - Simpson; Dennis D. ; et al. | 2014-05-15 |
| Cart Grant D687,614 - Simpson , et al. August 6, 2 | 2013-08-06 |
| Steering control system for dual path hydrostatic vehicle Grant 4,175,628 - Cornell , et al. November 27, 1 | 1979-11-27 |
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