Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5572828 | Pin lock for tilt sash lock shoe | — | 1996-11-12 |
| 5551189 | Hurricane window brace | — | 1996-09-03 |
| 5530991 | Block and tackle window balance | Richard S. deNormand, James A. Martini | 1996-07-02 |
| 5463793 | Sash shoe system for curl spring window balance | — | 1995-11-07 |
| 5353548 | Curl spring shoe based window balance system | — | 1994-10-11 |
| 5231795 | Lock shoe system for heavy sash | — | 1993-08-03 |
| 5207025 | Automatic friction shoe | — | 1993-05-04 |
| 5199219 | Window jamb liner | James A. Martini, Richard S. deNormand | 1993-04-06 |
| 5189838 | Tilt sash lock shoe system | — | 1993-03-02 |
| 5159794 | Jamb liner slot cover | John I. Habbersett | 1992-11-03 |
| 5152032 | Window sash balance with tension and torsion spring | Donald D. Davis, William P. Newton | 1992-10-06 |
| 5119592 | Balance system for laterally biased sash guides | William P. Newton, John I. Habbersett, John T. Forbis | 1992-06-09 |
| 4941285 | Lift-off shoe system for tilt window | — | 1990-07-17 |
| 4885871 | Audibly locking shoe system for take-out window | James A. Martini, John I. Habbersett | 1989-12-12 |
| 4837976 | Window balance spring cover friction system | Patrick E. Milligan | 1989-06-13 |
| 4811455 | Window spring anchor | Wilford G. Ost | 1989-03-14 |
| 4800680 | Cord guide system for sash balance | Patrick E. Milligan, John I. Habbersett, Brian S. Dense | 1989-01-31 |
| 4799333 | Lock shoe system for take-out window | James A. Martini, John I. Habbersett | 1989-01-24 |
| 4779380 | Spring cover friction system for sash balance | — | 1988-10-25 |
| 4701288 | Method of making articles of dissimilar polymer compositions | William H. Cook, William G. Deichert, Richard J. Wrue | 1987-10-20 |
| 4275767 | Fluid resistor | — | 1981-06-30 |