Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000009346-21-000021-index-headers.html | 2021-03-11 09:20:52 | |
| 0000009346-21-000021-index.html | 2021-03-11 09:20:52 | |
| 0000009346-21-000021.txt | 2021-03-11 09:20:52 | |
 0000009346-21-000021-xbrl.zip | 13163 | 2021-03-11 09:20:52 |
| exhibit99_1.htm | 353199 | 2021-03-11 09:20:52 |
| FilingSummary.xml | 1767 | 2021-03-11 09:20:52 |
| Financial_Report.xlsx | 5552 | 2021-03-11 09:20:52 |
| form8k.htm | 30288 | 2021-03-11 09:20:52 |
| form8k_htm.xml | 5936 | 2021-03-11 09:20:52 |
 image0.jpg | 41821 | 2021-03-11 09:20:52 |
| MetaLinks.json | 23890 | 2021-03-11 09:20:52 |
| ptvc-20210311.xsd | 4440 | 2021-03-11 09:20:52 |
| ptvc-20210311_def.xml | 17711 | 2021-03-11 09:20:52 |
| ptvc-20210311_lab.xml | 27115 | 2021-03-11 09:20:52 |
| ptvc-20210311_pre.xml | 19897 | 2021-03-11 09:20:52 |
| R1.htm | 42801 | 2021-03-11 09:20:52 |
| report.css | 2767 | 2021-03-11 09:20:52 |
| Show.js | 1085 | 2021-03-11 09:20:52 |