Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4339007 | Progressing cavity motor governing system | — | 1982-07-13 |
| 4320929 | Sealed bearing system for hydraulically operated devices | Albert Goldstein | 1982-03-23 |
| 4311443 | Motor/pump transmission construction for a Moineau type apparatus | Albert Goldstein | 1982-01-19 |