| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | WIPO (World Intellectual Property Organization) | 5 | |
| #3 | Canada | 4 | |
| #4 | China | 3 | |
| #5 | Mexico | 3 | |
| #6 | Brazil | 1 | |
| #7 | Hong Kong | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Measuring distances | |
| #2 | Unspecified technologies | |
| #3 | Roof coverings | |
| #4 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allemand James S | 22 |
| Publication | Filing date | Title |
|---|---|---|
| US2011265339A1 | Lighted level tool | |
| WO2008144545A2 | Composite level tool | |
| CN101711344A | Clamping level tool | |
| CA2876612A1 | Level tool | |
| WO2004081487A2 | Builder’s measuring and marking tool |