Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4732478 | Process for determining, by optical emission spectrometry, the content in a steel of an element such as aluminum, in the dissolved state and in the precipitated state | Bernard Boury, Andre Wittmann | 1988-03-22 |
| 4446563 | Composite crucible | — | 1984-05-01 |
| 4401625 | Apparatus for preparing test samples | Andre Wittmann | 1983-08-30 |
| 4329136 | Apparatus for the automatic preparation of an X-ray spectrometry sample | Andre Wittmann | 1982-05-11 |