Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1085606 | Extendable window cleaning tool | William Harrington, Kai Hirsch | 2025-07-22 |
| D1085605 | Extendable window cleaning tool | William Harrington, Kai Hirsch | 2025-07-22 |
| D1008582 | Pole connection for a window cleaning tool | William Harrington, Kai Hirsch | 2023-12-19 |
| D1007793 | Pole connection for a window cleaning tool | William Harrington, Kai Hirsch | 2023-12-12 |
| D981222 | Clamp for an extendable pole | William Harrington, Kai Hirsch | 2023-03-21 |
| D976506 | Pole connection for a window cleaning tool | William Harrington, Kai Hirsch | 2023-01-24 |
| D973989 | Extendable window cleaning tool | William Harrington, Kai Hirsch | 2022-12-27 |