Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000009346-21-000032-index-headers.html | 2021-05-06 09:21:45 | |
| 0000009346-21-000032-index.html | 2021-05-06 09:21:45 | |
| 0000009346-21-000032.txt | 2021-05-06 09:21:45 | |
 0000009346-21-000032-xbrl.zip | 13136 | 2021-05-06 09:21:45 |
| exhibit99_1.htm | 244339 | 2021-05-06 09:21:45 |
| FilingSummary.xml | 1767 | 2021-05-06 09:21:45 |
| Financial_Report.xlsx | 5776 | 2021-05-06 09:21:45 |
| form8k.htm | 30271 | 2021-05-06 09:21:45 |
| form8k_htm.xml | 5933 | 2021-05-06 09:21:45 |
 image00001.jpg | 127913 | 2021-05-06 09:21:45 |
| MetaLinks.json | 23890 | 2021-05-06 09:21:45 |
| ptvc-20210506.xsd | 4440 | 2021-05-06 09:21:45 |
| ptvc-20210506_def.xml | 17711 | 2021-05-06 09:21:45 |
| ptvc-20210506_lab.xml | 27115 | 2021-05-06 09:21:45 |
| ptvc-20210506_pre.xml | 19897 | 2021-05-06 09:21:45 |
| R1.htm | 42797 | 2021-05-06 09:21:45 |
| report.css | 2767 | 2021-05-06 09:21:45 |
| Show.js | 1085 | 2021-05-06 09:21:45 |