Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5423231 | Foot control mechanism for a dental apparatus | Hans Helfrich, Hermann Landgraf | 1995-06-13 |
| 5243943 | Fuel injection pump | Gunter Bofinger, Heinz Nothdurft, Karl-Friedrich Russeler, Hubertus Zedler, Manfred Narr-Hess +1 more | 1993-09-14 |
| 5085196 | Fuel injection pump for internal combustion engines | — | 1992-02-04 |
| 5033441 | Fuel-injection pump for an internal-combustion engine | — | 1991-07-23 |
| 4733645 | Fuel injection pump for internal combustion engines | Karl-Friedrich Russeler | 1988-03-29 |
| 4619238 | Fuel injection pump for internal combustion engines | Karl-Friedrich Russeler | 1986-10-28 |
| 4482322 | Device for surface treatment of teeth | Hermann Landgraf | 1984-11-13 |
| 4462803 | Device for cleaning teeth | Hermann Landgraf | 1984-07-31 |