Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5362528 | Multi-layer pipe conduit having components of plastic material, inorganic filler material and glass fibers | — | 1994-11-08 |
| 5330238 | Coupler for connecting two plastic pipes and process and mold for producing the coupler | — | 1994-07-19 |
| 5306458 | Process for manufacturing a plastic pipe | Ralph Jost | 1994-04-26 |