Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8459307 | Duct fastseam | John J. Toben, Richard Blum, Michael C. Borwig | 2013-06-11 |
| 7681297 | Duct fastseam | John J. Toben, Richard Blum, Michael C. Borwig | 2010-03-23 |
| 6813982 | Positioner and cutting apparatus | Richard Blum | 2004-11-09 |
| 6547287 | Duct connecting system having integral transverse flanges | Richard Blum | 2003-04-15 |
| 6360420 | Insulated glass window spacer and method for making window spacer | Richard Blum, Gary Dickinson | 2002-03-26 |
| 6311534 | Sheet metal bending apparatus | Richard Blum | 2001-11-06 |
| 6279292 | Insulated glass window spacer and method for making window spacer | Richard Blum, Gary Dickinson | 2001-08-28 |
| 6038825 | Insulated glass window spacer and method for making window spacer | Rick Scott Blum, Gary Dickinson | 2000-03-21 |