Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660669 | Thermoplastic welding | — | 1997-08-26 |
| 5641422 | Thermoplastic welding of organic resin composites using a fixed coil induction heater | Marc R. Matsen, Karl A. Hansen, John J. deJong, executor | 1997-06-24 |
| 5624594 | Fixed coil induction heater for thermoplastic welding | Marc R. Matsen, Karl A. Hansen, by John J. DeJong, executor | 1997-04-29 |