Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5655564 | Septic system plastic distribution box with integrally fastened seal | — | 1997-08-12 |
| 5626346 | Embedded in concrete, elastomeric seal for pipes | — | 1997-05-06 |
| 5618445 | Septic tank solids retainer gas baffle | — | 1997-04-08 |
| 5601291 | Embedded in concrete, elastomeric seal for pipes | — | 1997-02-11 |
| 5592785 | Handle for subterranean concrete covers | — | 1997-01-14 |
| 5538035 | Plastic fluid distribution box with integrally fastened seal | — | 1996-07-23 |
| D354673 | Rebar spacer | — | 1995-01-24 |
| 5347787 | Universal spacer for concrete reinforcement rods | — | 1994-09-20 |
| 5286040 | Asymmetrical pipe seal and closure member | — | 1994-02-15 |
| 5130016 | Drain grate | — | 1992-07-14 |
| 5066169 | Retaining wall system | Felix P. Jaecklin | 1991-11-19 |
| D317812 | Septic tank baffle | — | 1991-06-25 |
| 4838731 | Septic tank distribution box system | — | 1989-06-13 |
| 4832846 | Septic tank baffle | — | 1989-05-23 |
| 4805920 | Pipe seal and closure member | — | 1989-02-21 |
| 4732397 | Cast in place combination aperture closure member and pipe seal for fluid distribution box | — | 1988-03-22 |