Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6851907 | coil spreader for spiral binding machines | Norton Spiel | 2005-02-08 |
| 6312204 | Semi-automatic plastic spiral binding machine | Norton Spiel | 2001-11-06 |
| 6000896 | Semi-automatic plastic spiral binding | Norton Spiel | 1999-12-14 |
| 5890862 | Semi-automatic plastic spiral binding machine | Norton Spiel | 1999-04-06 |