Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5291813 | Paper perforating device | David Blumenthal, Richard Somersall | 1994-03-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5291813 | Paper perforating device | David Blumenthal, Richard Somersall | 1994-03-08 |