Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5388339 | Tri-square protractor | George Spector | 1995-02-14 |
| 4835877 | Try square protractor | George Spector | 1989-06-06 |
| 4744152 | Tool for measuring angles on various articles | George Spector | 1988-05-17 |