Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819909 | Self-closing valve for sanitary installations | Thomas G. Hart, Karl G. Ohaus, Earl W. Nickerson | 1989-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819909 | Self-closing valve for sanitary installations | Thomas G. Hart, Karl G. Ohaus, Earl W. Nickerson | 1989-04-11 |