| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 1 | |
| #2 | Belgium | 1 | |
| #3 | Canada | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Denmark | 1 | |
| #6 | Spain | 1 | |
| #7 | Finland | 1 | |
| #8 | France | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Ireland | 1 | |
| #11 | Italy | 1 | |
| #12 | Netherlands | 1 | |
| #13 | Norway | 1 | |
| #14 | Sweden | 1 | |
| #15 | United States | 1 | |
| #16 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Dredging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Harmon James D | 3 |
| #2 | Harmon J D | 3 |
| #3 | Harmon J | 1 |
| #4 | James D Harmon | 1 |
| #5 | Jammes D Harmon | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3738029A | Dredging head with pivotally mounted mud shield |