Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365640 | Equipment for smoking smokable objects | Gerd Schumacher | 1982-12-28 |
| 4348887 | Apparatus for determining the effects of dilution and/or diffusion on the gaseous components of a gas flow | Gerd Schumacher, Helmut Kirchner | 1982-09-14 |