Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8480093 | Internal pipe seal | James W. Skinner | 2013-07-09 |
| 7263746 | Expansion ring assembly with removable drive mechanism | Andrew J. Happel | 2007-09-04 |
| 7146689 | Expansion ring assembly | James W. Skinner | 2006-12-12 |
| 6805359 | Expansion ring assembly | James W. Skinner, Michael R. Miller | 2004-10-19 |
| 6572118 | Flexible seal member for non-metallic conduit to concrete manhole junction | Fouad M. Deeb, Michael R. Miller, John M. Kurdziel, James W. Skinner | 2003-06-03 |
| 5876039 | Folded gasket and method of casting same in a wall | James W. Skinner, Michael R. Miller, William O. Skinner | 1999-03-02 |
| 5732955 | Expandable compression ring | James W. Skinner, William O. Skinner, Fouad M. Deeb, Michael R. Miller | 1998-03-31 |
| 5570890 | Expandable compression ring | James W. Skinner, William O. Skinner, Fouad M. Deeb, Michael R. Miller | 1996-11-05 |
| 5529312 | Gasket and method of casting same in a wall | James W. Skinner, Michael R. Miller | 1996-06-25 |