Issued Patents All Time
Showing 201–206 of 206 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498042 | Quick connect connector for grooved pipe | — | 1996-03-12 |
| 5279143 | Self-tracking roll for grooving thin walled pipe | — | 1994-01-18 |
| 5246256 | Roll grooved pipe | Robert Rung | 1993-09-21 |
| 5180193 | Elastomer-lined metal pipe | Robert Rung | 1993-01-19 |
| 5169177 | Quick connect branch connector | William R. McLennan, Robert Rung | 1992-12-08 |
| 4702500 | Fire resistant seal | Lawrence W. Thau, Jr. | 1987-10-27 |