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|---|---|---|
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| 0001564590-21-031578-index.html | 2021-06-03 16:28:08 | |
| 0001564590-21-031578.txt | 2021-06-03 16:28:08 | |
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| pten-ex232_8.htm | 2176 | 2021-06-03 16:28:08 |
| pten-ex51_6.htm | 11212 | 2021-06-03 16:28:08 |
| pten-s8.htm | 94775 | 2021-06-03 16:28:08 |