Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7490414 | Tape measure with extended standout | James M. Critelli, William C. Blackman, Darin H. Duphorne, John Owen | 2009-02-17 |
| 7159331 | Tape measure with extended standout | James M. Critelli, William C. Blackman, Darin Duhporne, John Owen | 2007-01-09 |
| 7111408 | Folding rule | James M. Critelli | 2006-09-26 |
| 6811109 | Retainer for power-return tape measure spring | William C. Blackman | 2004-11-02 |
| 6349482 | Three position locking mechanism for a tape measure | — | 2002-02-26 |
| 6308432 | Twist lock mechanism for a tape measure | John Moody | 2001-10-30 |
| 6098302 | Rafter template | — | 2000-08-08 |
| D421230 | Tape measure blade | Michael Joseph Bobay | 2000-02-29 |
| D402216 | Tape measure blade | Michael Joseph Bobay | 1998-12-08 |
| 5806202 | Retractable tape measure with sliding lock | William C. Blackman | 1998-09-15 |
| D397950 | Tape measure housing | William C. Blackman, Michael Joseph Bobay, John Moody | 1998-09-08 |
| 5794357 | One piece compound lock for tape measure | William C. Blackman | 1998-08-18 |
| 5600894 | Hooking device for a measuring tape | William C. Blackman, William H. Silvester | 1997-02-11 |