Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6227460 | Self-contained cleaning system | David L. Shaffer | 2001-05-08 |
| 6186557 | Pipe connection and combination of a connection and a detaching tool | — | 2001-02-13 |
| 4884829 | Plug-in connection for connecting tube and host lines in particular for use in tube-line systems of motor vehicles | Frank Neumann, Dankmar Schafer | 1989-12-05 |
| 4448447 | Coupling for pressure lines | Frank Neumann, Dankmar Schaefer | 1984-05-15 |