Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7122230 | Controlled diameter collapsible artificial christmas tree | — | 2006-10-17 |
| 7094142 | Portable device with interchangeable air cleaning modules for cleaning the air outside of an existing enclosed space and delivering the cleaned air into the existing enclosed space | — | 2006-08-22 |
| 7008590 | Refractory stopper with a temperature resistant, electrically conductive coating | — | 2006-03-07 |
| 4554035 | Method of manufacturing a slide gate | Joseph L. Stein | 1985-11-19 |
| 4383624 | Slide gate | Joseph L. Stein | 1983-05-17 |