Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-021070-index-headers.html | 2019-05-31 06:07:20 | |
| 0001564590-19-021070-index.html | 2019-05-31 06:07:20 | |
| 0001564590-19-021070.txt | 2019-05-31 06:07:20 | |
| pten-ex101_6.htm | 583682 | 2019-05-31 06:07:20 |
| pten-sd.htm | 22860 | 2019-05-31 06:07:20 |