Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4263689 | Carpet sweeping device | Rolf G. Schulein | 1981-04-28 |
| 4219897 | Carpet sweeping device | Rolf G. Schulein | 1980-09-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4263689 | Carpet sweeping device | Rolf G. Schulein | 1981-04-28 |
| 4219897 | Carpet sweeping device | Rolf G. Schulein | 1980-09-02 |