Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6371744 | Dry screw vacuum pump having spheroidal graphite cast iron rotors | Masashi Yoshimura, Masaaki Takahashi | 2002-04-16 |
| 6368091 | Screw rotor for vacuum pumps | — | 2002-04-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6371744 | Dry screw vacuum pump having spheroidal graphite cast iron rotors | Masashi Yoshimura, Masaaki Takahashi | 2002-04-16 |
| 6368091 | Screw rotor for vacuum pumps | — | 2002-04-09 |