Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303887 | Universal pipe support and hanger | by Melba F. Hasty, legal representative, Joseph P. Ismert, James M. Farnen, Frank D. Julian | 1994-04-19 |
| 5222334 | Multiple size vent-pipe elastomeric collar | — | 1993-06-29 |
| 5036636 | Multiple size vent-pipe roof flashing | — | 1991-08-06 |
| 4864782 | Two-piece flashing for roof vent pipes | — | 1989-09-12 |
| 4563847 | Universal flashing for roof vent pipes | — | 1986-01-14 |