Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D380957 | Sash lock | Jeffrey T. McNamara, Franz W. Jans | 1997-07-15 |
| 5566507 | Double-hung tilting sash type window system | Melvin J. Schmidt, Thomas P. Coach, Glenn C. Hause, Dennis A. Galowitz, James P. Wyman +2 more | 1996-10-22 |
| 5544450 | Double-hung tilting sash type window system | Melvin J. Schmidt, Thomas P. Coach, Glenn C. Hause, Dennis A. Galowitz, James P. Wyman +2 more | 1996-08-13 |
| 5086601 | Joint structure | Dennis A. Galowitz | 1992-02-11 |
| 5010708 | Corner lock | Todd W. Bruchu | 1991-04-30 |
| 4999950 | Inwardly swinging hinged door assembly | Scott R. Beske | 1991-03-19 |