Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5378356 | Roof drain structure | — | 1995-01-03 |
| 5072461 | Movable fitting members for use with drain fittings | — | 1991-12-17 |
| 5072911 | Barrier mold for forming openings in concrete structures | — | 1991-12-17 |
| 5052726 | Seal structures for flanges having bowed sealing surfaces | — | 1991-10-01 |
| 4961848 | Drain grate with primary and secondary weirs | — | 1990-10-09 |
| 4930733 | Pipe holders | — | 1990-06-05 |
| 4925045 | Tub boxes | — | 1990-05-15 |
| 4903921 | Pipe holders | — | 1990-02-27 |
| 4865072 | Washing machine connection boxes | — | 1989-09-12 |
| 4768560 | Pipe plugs | — | 1988-09-06 |
| 4768741 | Pipe hangers | — | 1988-09-06 |
| 4742585 | Tub box | — | 1988-05-10 |
| 4611626 | Fluid control valve | — | 1986-09-16 |
| 4564249 | Miniature washing machine box | — | 1986-01-14 |
| 4525273 | Drain grate with adjustable weirs | — | 1985-06-25 |
| 4487690 | Sump or flush installable roof drain | — | 1984-12-11 |
| 4484424 | Roof vent | — | 1984-11-27 |
| 4442994 | Pipe hanger capable of totally encircling a pipe | — | 1984-04-17 |
| D270935 | Expansion coupling for plastic pipe | — | 1983-10-11 |
| 4400920 | Apparatus for securing pipe | — | 1983-08-30 |
| 4400272 | Drain grate with adjustable weirs | — | 1983-08-23 |
| 4350372 | Expansion coupling for large diameter plastic pipes | — | 1982-09-21 |
| 4280305 | Roof flashings for use with solar collector | — | 1981-07-28 |
| 4265058 | Roof flashing structures | — | 1981-05-05 |
| D257057 | Pipe test cap | — | 1980-09-23 |