Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6360737 | Annular saw and method of protecting the clamping edge and of cleaning the saw blade of an annular saw | Leopold Neussl, Peter Lehfeld | 2002-03-26 |
| 5144938 | Method and device for resharpening saws especially used for making semiconductor wafers | Helmut Seeburger, Peter Lehfeld | 1992-09-08 |