Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4295668 | Adapter for connecting plastic pipe system to cast iron pipe system | Russell Cox, William V. Crawford | 1981-10-20 |
| 4258742 | Tapping apparatus | Ralph A. Wynne | 1981-03-31 |