Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5133016 | Hearing aid with replaceable drying agent | — | 1992-07-21 |
| 4912759 | Device for selectively depressing a telephone switch | — | 1990-03-27 |
| 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 |
| 4221552 | Hydraulic motor with variable speed | — | 1980-09-09 |
| 4187918 | Down-hole earth drilling motor capable of free circulation | — | 1980-02-12 |