Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10184599 | Split-ring gland pipe coupling with corrugated armor | Edwin A. Bird | 2019-01-22 |
| 8864181 | Split-ring gland pipe coupling with corrugated armor | Edwin A. Bird | 2014-10-21 |
| 8789832 | Split-ring gland pipe coupling with corrugated armor | — | 2014-07-29 |
| 8776351 | Split-ring gland pipe coupling with corrugated armor | Edwin A. Bird | 2014-07-15 |