Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D350666 | Window operator handle design | Marvin G. Root | 1994-09-20 |
| D334132 | Window sash lock | Marvin G. Root | 1993-03-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D350666 | Window operator handle design | Marvin G. Root | 1994-09-20 |
| D334132 | Window sash lock | Marvin G. Root | 1993-03-23 |