Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7700887 | Variable differential adjustor | — | 2010-04-20 |
| 7339126 | Variable differential adjustor | — | 2008-03-04 |
| 7084363 | Variable differential adjustor | — | 2006-08-01 |
| 6712553 | Grid drain system | — | 2004-03-30 |
| 6160486 | Service alarm monitor | — | 2000-12-12 |
| 4461614 | Through flow sump pump | — | 1984-07-24 |
| 4309157 | Protection device and sump pump | — | 1982-01-05 |
| 4230440 | Through flow sump pump | — | 1980-10-28 |
| 4228427 | Monitor apparatus for sump pumps | — | 1980-10-14 |
| 4228428 | Visible signal for alarm, such as a smoke detector | — | 1980-10-14 |
| 4215975 | Sump pump with air column therein when pump is not operating | — | 1980-08-05 |
| 4201519 | Through flow sump pump | — | 1980-05-06 |