Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5913764 | Method of manufacturing flat-bottom bags with a glued-on bottom lining | Wilfried Kolbe, Hans-Rudolph Van Den Maagdenberg, Gunter Niemeyer, Klaus Schirrich | 1999-06-22 |
| 5716136 | Bag with carrying handles | Wilfried Kolbe, Klaus Schirrich | 1998-02-10 |
| 5609556 | Method and apparatus for manufacturing bags with strap-shaped carrying handles | Fred Rostalski, Ewald Steinweg, Wilfried Kolbe, Klaus Schirrich | 1997-03-11 |