Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9708872 | Clean out sub | Rudolph Ernst Krueger, V, Andrew Trowbridge | 2017-07-18 |
| 9157277 | Motor saver sub for down hole drilling assemblies | Rudolph Ernst Krueger, V | 2015-10-13 |
| 8119047 | In-situ method of forming a non-rotating drill pipe protector assembly | N. Bruce Moore, Sarah Mitchell | 2012-02-21 |