Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D751428 | Torpedo level | Robert A. Johnson, William G. Johnson, Timothy J. Wojciechowski, John Dwyer | 2016-03-15 |
| D751429 | I-beam level | Robert A. Johnson, William G. Johnson, Timothy J. Wojciechowski, John Dwyer | 2016-03-15 |
| D751430 | Box beam level | Robert A. Johnson, William G. Johnson, Timothy J. Wojciechowski, John Dwyer | 2016-03-15 |