Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573040 | Interlocked plastic-encased concrete pipe | Raymond L. Sterling | 1996-11-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573040 | Interlocked plastic-encased concrete pipe | Raymond L. Sterling | 1996-11-12 |