Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5060588 | Method of attaching a strip of cloth with a zip-fastener component to a trouser forepart | Siegfried Vogt, Egon Upmeier, Wolfram Schulze | 1991-10-29 |
| 5016549 | Attaching a strip of cloth with a zip-fastener component to a trouser forepart | Siegfried Vogt, Egon Upmeier, Wolfram Schulze | 1991-05-21 |