US Patent Class 405
HYDRAULIC AND EARTH ENGINEERING-- Main Headings
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| CLASS NOTES | ||
| 1 | DF | MARINE VESSEL PORTAGE, LAUNCHING, OR REMOVING {3} |
| 8 | DF | PRESSURIZED CAISSON {2} |
| 11 | DF | MEANS TO EXPOSE A NORMALLY WETTED SURFACE,E.G., COFFERDAM, ETC. {3} |
| 15 | DF | BANK, SHORE, OR BED PROTECTION {2} |
| 36 | DF | DRAINAGE OR IRRIGATION {7} |
| 52 | DF | FLUID CONTROL, TREATMENT, OR CONTAINMENT {7} |
| 128 | DF | WASTE DISPOSAL IN SOIL {1} |
| 130 | DF | TEMPERATURE MODIFICATION OR CONTROL OF EARTHEN FORMATION {1} |
| 132 | DF | UNDERGROUND PASSAGEWAY, E.G., TUNNEL {6} |
| 154 | DF | PIPE OR CABLE LAYING, RETRIEVING, OR UNDERWATER MANIPULATION {6} |
| 185 | DF | DIVING {6} |
| 195.1 | DF | MARINE STRUCTURE OR FABRICATION THEREOF {11} |
| 229 | DF | FOUNDATION {2} |
| 258 | DF | EARTH TREATMENT OR CONTROL {5} |
| 303 | DF | MISCELLANEOUS |