Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-19-021919-index-headers.html | 2019-06-06 16:17:58 | |
| 0001564590-19-021919-index.html | 2019-06-06 16:17:58 | |
| 0001564590-19-021919.txt | 2019-06-06 16:17:58 | |
 gzbmb0svlr32000001.jpg | 7511 | 2019-06-06 16:17:58 |
| pten-ex231_7.htm | 2977 | 2019-06-06 16:17:58 |
| pten-ex51_6.htm | 15603 | 2019-06-06 16:17:58 |
| pten-s8.htm | 116166 | 2019-06-06 16:17:58 |