| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 3 | |
| #2 | Brazil | 2 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Netherlands | 2 | |
| #6 | Hong Kong | 1 | |
| #7 | Italy | 1 | |
| #8 | Sweden | 1 | |
| #9 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pipes | |
| #3 | Unspecified technologies | |
| #4 | Hydraulic engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nelson Norman Allen | 12 |
| Publication | Filing date | Title |
|---|---|---|
| DE2549607A1 | Modular underwater well drilling platform - assembled from guide bases which are located over well sites and connected by spacer frames | |
| NL7512768A | Modular underwater well drilling platform - assembled from guide bases which are located over well sites and connected by spacer frames |