Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7513540 | Inactive door bolt | Bruce Hagemeyer, Fredrick L. Hrdlicka, Gary E. Tagtow, Chad Swier | 2009-04-07 |
| 5855092 | Sash brake for double-hung window with pivoting sash | Scot C. Miller | 1999-01-05 |