Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826139 | Stopper for a tap hole of a steel converter and method of operating a converter | — | 1989-05-02 |
| 4373320 | Packing line for packing stacks of rectangular tinplate sheets on pallets | Jan Olivierse | 1983-02-15 |