Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8678643 | Method for non-destructive testing of at least partially open hollow components or system components for tightness in series production | — | 2014-03-25 |
| 6550300 | Apparatus for producing annularly corrugated metal tubes | Ernst Hoffmann, Klaus-D. Jank, Michael Meyer, Friedrich Harten | 2003-04-22 |
| 4852688 | Collapsible ladder assembly | — | 1989-08-01 |