Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11041287 | Collection tank | — | 2021-06-22 |
| 10844575 | Collection tank | — | 2020-11-24 |
| 10563375 | Collection tank | — | 2020-02-18 |
| 10443210 | Digging and backfill apparatus | John William Gilman | 2019-10-15 |
| 10337167 | Collection tank | — | 2019-07-02 |
| 9816250 | Digging and backfill apparatus | John William Gilman | 2017-11-14 |
| 9399853 | Digging and backfill apparatus | John William Gilman | 2016-07-26 |
| 9260050 | Collection tank | — | 2016-02-16 |
| 9260049 | Collection tank | — | 2016-02-16 |
| 9260048 | Collection tank | — | 2016-02-16 |
| 8925753 | Collection tank | — | 2015-01-06 |
| 8667717 | Digging and backfill apparatus | John William Gilman | 2014-03-11 |
| 8360260 | Collection tank | — | 2013-01-29 |
| 8336231 | Digging and backfill apparatus | John William Gilman | 2012-12-25 |
| 7837050 | Collection tank | — | 2010-11-23 |
| 7743537 | Earth reduction tool | — | 2010-06-29 |
| 7484322 | Digging and backfill apparatus | John William Gilman | 2009-02-03 |
| 7415748 | Vacuum implement for use with a skid steer | Troy Devan Guhr, John William Gilman | 2008-08-26 |