| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 1 | |
| #2 | Australia | 1 | |
| #3 | Belgium | 1 | |
| #4 | Canada | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Germany | 1 | |
| #7 | Denmark | 1 | |
| #8 | Spain | 1 | |
| #9 | France | 1 | |
| #10 | Ireland | 1 | |
| #11 | Italy | 1 | |
| #12 | Mexico | 1 | |
| #13 | Netherlands | 1 | |
| #14 | Norway | 1 | |
| #15 | African Intellectual Property Organization | 1 | |
| #16 | Sweden | 1 | |
| #17 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Measuring distances |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cousin Gilbert | 8 |
| Publication | Filing date | Title |
|---|---|---|
| US4144682A | Topographic bench mark |