Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157808 | Coil spring counterbalance hardware assembly and connection method therefor | — | 1992-10-27 |
| 5140769 | Sliding center-pivoted window | Eugene F. Hickson | 1992-08-25 |
| 5119591 | Vertically slidable window unit | Eugene F. Hickson | 1992-06-09 |
| 4935987 | Self-contained heavy duty constant force sliding sash counterbalance assembly | — | 1990-06-26 |
| 4694552 | Method for fabricating a compound portal frame extrusion profile | Warren S. Ecker, Howard Ecker, Robert Ecker | 1987-09-22 |
| 4683676 | Tilt window balance shoe assembly | — | 1987-08-04 |
| 4594813 | Window vent | — | 1986-06-17 |
| 4570381 | Single plane window or door structure | — | 1986-02-18 |
| RE31721 | Insulated multiple component single plane building structure portal closure | — | 1984-11-06 |
| 4324072 | Insulated multiple component single plane building structure portal closure | — | 1982-04-13 |
| 4320597 | Window latch | — | 1982-03-23 |
| 4283883 | Window assembly having removable sash | — | 1981-08-18 |