Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8403036 | Single piece packer extrusion limiter ring | Adam K. Neer, Emil Edward Havelka | 2013-03-26 |
| 6695050 | Expandable retaining shoe | Donald W. Winslow, Donald R. Smith | 2004-02-24 |
| 6695051 | Expandable retaining shoe | Donald R. Smith, Donald W. Winslow | 2004-02-24 |