Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11311158 | Central vacuum cleaning system | Trevor D. Coltrin, Darrell V. Nieschwitz, Greg A. Calderone, Shawn C. Metz | 2022-04-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11311158 | Central vacuum cleaning system | Trevor D. Coltrin, Darrell V. Nieschwitz, Greg A. Calderone, Shawn C. Metz | 2022-04-26 |