Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6554237 | Self aligning curtain rod bracket | David J. Simmons | 2003-04-29 |
| 6471640 | Endoscope optics with device counteracting lens-element shifting | Holger Frische, Jens Peter Wulfsberg | 2002-10-29 |
| 5999344 | Endoscopic telescope with rod lenses spaced by spacer tubes | Jens Peter Wulfsberg, Holger Frische | 1999-12-07 |