Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6271743 | Winding arrangement of a coil | Walter Muller, Gerhard Doll | 2001-08-07 |
| 5764122 | Winding arrangement of a coil | Walter Muller, Gerhard Doll, Helga Luise Friederike Doll, heir, Rudiger Doll, Achim Vitus Doll, heir | 1998-06-09 |