Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658138 | Rotary pump having inner and outer components having abutments and recesses | Viljo K. Valavaara, Lixin Peng | 1997-08-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658138 | Rotary pump having inner and outer components having abutments and recesses | Viljo K. Valavaara, Lixin Peng | 1997-08-19 |