Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4258935 | Bell end of a bell and spigot joint | Kemener J. Whalen, David W. French | 1981-03-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4258935 | Bell end of a bell and spigot joint | Kemener J. Whalen, David W. French | 1981-03-31 |