Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889034 | Automatic reciprocator with manifold and sleeve valve | — | 1989-12-26 |
| 4878298 | Liquid indicator gauge | — | 1989-11-07 |
| 4850153 | Gear driven rotary wheel retainer | — | 1989-07-25 |
| 4810235 | Variable transmission with an integral shifter | Samuel Shiber | 1989-03-07 |