Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D332411 | Level tool | James Masters | 1993-01-12 |
| D323997 | Vertical plumb tool | James Masters | 1992-02-18 |
| 4970796 | Self supporting spirit level tool | James Masters | 1990-11-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D332411 | Level tool | James Masters | 1993-01-12 |
| D323997 | Vertical plumb tool | James Masters | 1992-02-18 |
| 4970796 | Self supporting spirit level tool | James Masters | 1990-11-20 |