Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358993 | Apparatus for thermally treating a layer of material | by Emilie Spillmann, heir, by Irene Scheffre nee Spillmann, heir, by Rolf Spillmann, heir, Rolf Lehmann | 1982-11-16 |