Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658138 | Rotary pump having inner and outer components having abutments and recesses | George F. Round, Lixin Peng | 1997-08-19 |
| 5649424 | Two-stage pressure cylinder | — | 1997-07-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658138 | Rotary pump having inner and outer components having abutments and recesses | George F. Round, Lixin Peng | 1997-08-19 |
| 5649424 | Two-stage pressure cylinder | — | 1997-07-22 |