Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6805158 | Apparatus for visually checking the operational status of a stop valve, and a manual opening apparatus for a normally-closed valve | — | 2004-10-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6805158 | Apparatus for visually checking the operational status of a stop valve, and a manual opening apparatus for a normally-closed valve | — | 2004-10-19 |