Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12046795 | Telecommunications mounting frames and methods of making same | Brian Cross, Roger K. Hanson, Charles John Mann | 2024-07-23 |
| 5865235 | Counterbalance mechanism for vertical opening door | Leroy G. Krupke, Foad Vafaie, Pierre-Louis Foucault | 1999-02-02 |
| 5632317 | Roll-up door | Leroy G. Krupke, Dennis A. Kalgren, Anthony J. Shelton | 1997-05-27 |
| 5601133 | Roll-up door | Leroy G. Krupke, Dennis A. Kalgren, Anthony J. Shelton | 1997-02-11 |