Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33084 | Intermittently operating pneumatic device for pumping solid-carrying liquids and slurries | — | 1989-10-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33084 | Intermittently operating pneumatic device for pumping solid-carrying liquids and slurries | — | 1989-10-10 |