Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10053852 | Method for temporarily closing off a gutter being covered by a grate of a paved part of the earth's surface; as well as a closing organ for a gutter | Martin Robert Drienhuizen | 2018-08-21 |