Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581663 | Weld wheel assembly for disposition on a membrane welding machine | Brian Whelan, Paul Eric Peterson, Claus Pfotenhauer | 2003-06-24 |
| 6554947 | Method for attaching thermoplastic strips to thermoplastic roof membranes | Claus Pfotenhauer, Brian Whelan | 2003-04-29 |
| 6533014 | Nozzle for heat welding overlapping roof membranes to each other along separated first and second paths | Brian Whelan, Paul Eric Peterson, Claus Pfotenhauer | 2003-03-18 |