Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4695416 | Method and apparatus for mould-forming expanded plastics form blocks | Peter Treffner | 1987-09-22 |
| 4399948 | Pulverizer | Peter Treffner | 1983-08-23 |
| 4222299 | Multi-bladed cutting apparatus | Peter Treffner | 1980-09-16 |