Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6847394 | Video inspection device | Richard W. Hansen, Patrick Elmendorf, Virgil Chip Hennen | 2005-01-25 |
| D481074 | Expanding file | David D. Stone, David Shapiro | 2003-10-21 |
| D471014 | Portfolio | — | 2003-03-04 |
| D465331 | Expandable file portfolio | — | 2002-11-12 |
| D465087 | Portfolio | — | 2002-11-05 |
| D456135 | Expanding file case | — | 2002-04-30 |
| D451961 | Pencil sharpener | — | 2001-12-11 |
| D451143 | Hole punch | — | 2001-11-27 |
| D451140 | Compass | — | 2001-11-27 |
| D449166 | Expanding file portfolio | — | 2001-10-16 |
| D429415 | Plastic container | — | 2000-08-15 |
| D420703 | Compass | — | 2000-02-15 |
| D418874 | Pencil sharpener | — | 2000-01-11 |
| D340652 | Multi purpose drawing implement | — | 1993-10-26 |
| D340195 | Ruler | — | 1993-10-12 |
| D336105 | Safety compass | Gunar Narubin | 1993-06-01 |
| D335823 | Protractor | Gunar Narubin | 1993-05-25 |
| D335308 | Pencil sharpener | Gunar Narubin | 1993-05-04 |
| 5113590 | Protractor | Gunar Narubin | 1992-05-19 |
| 5090127 | Safety compass | Gunar Narubin | 1992-02-25 |