Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594993 | Hand-held builder's square and string line device incorporating a laser | Herbert P. Radding, Roger D. Ludlow | 1997-01-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594993 | Hand-held builder's square and string line device incorporating a laser | Herbert P. Radding, Roger D. Ludlow | 1997-01-21 |