Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8844204 | Security door system | — | 2014-09-30 |
| 8516750 | Security door system | — | 2013-08-27 |
| 7900398 | Security door system | — | 2011-03-08 |
| 7555867 | Swing door operator | — | 2009-07-07 |
| 7497050 | Sliding door having an adjustable torsion bar assembly | Federico Romero | 2009-03-03 |
| 7228659 | Sliding door reinforced frame header with movable cover | Federico Romero | 2007-06-12 |
| 7143547 | Spring assisted swing door operator | — | 2006-12-05 |
| 4980992 | Revolving door assembly with foldable door wings | Lew V. Hewitt, David Paul Hewitt | 1991-01-01 |