Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4516859 | Apparatus for closing a discharge opening in a rotary table | Adolf Spengler | 1985-05-14 |
| 4186592 | Method of measuring the moisture content in flowable materials and apparatus for carrying out the method | Hubert Eirich, Walter Eirich, Paul Eirich, Adolf Spengler | 1980-02-05 |