Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10058205 | Automatic and dynamic torque calibration for drapery track system | Benjamin Slivka, Charles R. Derk, Jr. | 2018-08-28 |
| 9970234 | Automatic torque calibration for roller shades | Charles R. Derk, Jr., Benjamin Slivka | 2018-05-15 |