Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9416616 | Assisting retrieval of a downhole tool | Christopher Robert Delzell, William Mark Richards, William David Henderson | 2016-08-16 |
| 9404314 | Reciprocating debris exclusion device for downhole connectors | Eddie Eddieberto Perez, William Germany, William Mark Richards, William David Henderson | 2016-08-02 |