Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8349411 | Method for producing raised structures on the surface of a pencil | Walter Oetter, Gerhard Lugert | 2013-01-08 |
| 7351469 | Method of producing surface coatings on articles, and article having a surface coating | Walter Oetter, Gerhard Lugert | 2008-04-01 |
| 6837637 | Wood-encased pencil for writing, sketching, drawing, and cosmetic purposes | Gerhard Lugert, Walter Oetter | 2005-01-04 |
| 6461067 | Wood-encased pencil for writing, sketching, drawing, and cosmetic purposes | Gerhard Lugert, Walter Oetter | 2002-10-08 |