Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D292584 | Facsimile receiver | David G. Rutherford, Bernd Helling, David M. Shearn | 1987-11-03 |
| 4661861 | Laser printing facsimile receiver | David G. Rutherford, Bernd Helling, David M. Shearn | 1987-04-28 |