Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5944288 | Constant support pipe hanger | Frank J. Birch | 1999-08-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5944288 | Constant support pipe hanger | Frank J. Birch | 1999-08-31 |