Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451957 | Apparatus for joining the ends of a belt to make it endless | Johannes Lefferts | 1984-06-05 |
| 4362776 | Sieve belt with filler material | Johannes Lefferts | 1982-12-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451957 | Apparatus for joining the ends of a belt to make it endless | Johannes Lefferts | 1984-06-05 |
| 4362776 | Sieve belt with filler material | Johannes Lefferts | 1982-12-07 |