| 10329812 |
Tank cover access hatch with safety barrier |
Roland Wright, Ronald Kuehne |
2019-06-25 |
| 10227799 |
Slide lock for hatch on gas containment cover |
Roland Wright |
2019-03-12 |
| 10124291 |
Trench spanning modules in a biofilter floor assembly |
Ronald Kuehne, Gary Powell |
2018-11-13 |
| 8136312 |
Fencing floor |
— |
2012-03-20 |
| 7713732 |
High strength modular support for biofiltration and composting |
— |
2010-05-11 |
| 7422895 |
Biofilter or compost support assembly |
— |
2008-09-09 |
| 6802157 |
Tank cover system with substantial gas seal |
— |
2004-10-12 |
| 6255102 |
Modular support for biofiltration |
— |
2001-07-03 |
| 6151835 |
Tank cover structure |
— |
2000-11-28 |
| 6012259 |
Tank cover structure |
— |
2000-01-11 |
| 5941027 |
Access panel on deck structure |
— |
1999-08-24 |
| 5911662 |
Tank cover structure |
— |
1999-06-15 |
| 5845594 |
Dock structure |
John Hallsten, Roland Wright |
1998-12-08 |
| 5689920 |
Modular containment system for hazardous materials |
— |
1997-11-25 |
| 5617677 |
Tank or channel cover |
— |
1997-04-08 |
| 5545358 |
Tank cover structure with aeration distribution |
Elena Bailey |
1996-08-13 |
| 5526620 |
Tank cover structure with odor exhaust system |
— |
1996-06-18 |
| 5454195 |
Modular containment system for hazardous materials |
— |
1995-10-03 |
| D359565 |
Extruded metal structural connecting member for securing planks to beams in an interlocking field-erectable deck or cover structure |
— |
1995-06-20 |
| D358671 |
Extruded metal beam tube for an interlocking field-erectable deck or cover structure |
— |
1995-05-23 |
| 5325646 |
Tank cover structure |
John Hallsten |
1994-07-05 |
| D345222 |
Extruded metal plank for an interlocking field-erectable deck or cover structure |
John Hallsten |
1994-03-15 |