Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4916904 | Injection element for a combustion reactor, more particularly, a steam generator | Hans J. Sternfeld, Karlheinz Wolfmuller | 1990-04-17 |
| 4386240 | Push-button unit for telephone sets | Gerd Philipp, Albert Schach | 1983-05-31 |