Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6412821 | Device for the vacuum-tight connecting of two bodies of different materials | Winfried Schulmann, Helmut Kaiser | 2002-07-02 |
| 6010569 | Device for handling heavy components of a crystal puller according to the Czochralski method which is supported in a supporting frame | Winfried Schulmann, Helmut Kaiser, Franz Thimm | 2000-01-04 |