Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066026 | Diaphragm controlled bypass valve | John R. Grenaway, William Clinton Osteen | 2011-11-29 |
| 8028712 | Diaphragm controlled bypass valve | John R. Grenaway, William Clinton Osteen | 2011-10-04 |