Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1013826 | Ballast-free tank | David Michael Smead, Donald J. Nicoll | 2024-02-06 |
| 8746492 | Sewage tanks and grinder pump systems | Clark A. Henry | 2014-06-10 |
| 8342434 | Cutting wheels for grinder pumps | George A. Earle, III | 2013-01-01 |
| 8297466 | Sewage tanks and grinder pump systems | Clark A. Henry, Adrian Harold Massey | 2012-10-30 |
| 7624892 | Sewage tanks and grinder pump systems | Clark A. Henry, Graeme Francis Hisgrove, Adrian Harold Massey | 2009-12-01 |
| D556293 | Sewage tank | Clark A. Henry, Graeme Francis Hisgrove, Adrian Harold Massey | 2007-11-27 |
| D552708 | Sewage tank | Clark A. Henry, Graeme Francis Hisgrove, Adrian Harold Massey | 2007-10-09 |
| D529573 | Sewage tank | Clark A. Henry, Graeme Francis Hisgrove, Adrian Harold Massey | 2006-10-03 |