| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 5 | |
| #2 | United States | 3 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Marine propulsion | |
| #2 | Ships |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gruenwald David J | 4 |
| #2 | Small Mark | 3 |
| #3 | Small Mark S | 3 |
| #4 | Gruenwald David | 3 |
| Publication | Filing date | Title |
|---|---|---|
| AU4952001A | Marine propeller | |
| WO0174658A2 | Marine propeller | |
| WO0172587A2 | Method of vessel propulsion with coordinated bow propulsion | |
| AU4368501A | Method of vessel propulsion with coordinated bow propulsion | |
| EP1365951A1 | Method and apparatus for reverse steering of single shaft marine propulsion system | |
| US6461206B2 | Impact rudder | |
| US6325010B1 | Method of vessel propulsion with coordinated bow propulsion | |
| US6213824B1 | Method for reducing vessel draft |