Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4953235 | Trap fitting assembly | — | 1990-09-04 |
| 4724858 | Firestop stack fitting | — | 1988-02-16 |
| 4638829 | Firestop fitting for carrier mounted water closets | — | 1987-01-27 |
| 4623170 | Coupling | — | 1986-11-18 |
| 4583565 | Firestop stack fitting and coupling combination | — | 1986-04-22 |
| 4420176 | Elastomeric joint for use between rigid fittings and rigid pipe and method of use | — | 1983-12-13 |
| D260170 | Protective cover for a sewer pipe flange | — | 1981-08-11 |
| 4261598 | Concrete floor embedded coupling for plastic pipe | — | 1981-04-14 |
| 4233697 | Protective flange cover and method of use | — | 1980-11-18 |