Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074373 | Electrically heatable insole | David Macher | 2011-12-13 |
| 7469487 | Device for drying shoes, gloves or garments | David Macher, Heinz Zorn | 2008-12-30 |
| 4731639 | Microfilm pickup camera with marking means for screened originals | Walter Gutmann, Wolfram Betzold, Wilfried Hofmann, Traugott Liermann, Klaus Schiessl | 1988-03-15 |