Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10535246 | Sewer alarm apparatus having a probe | — | 2020-01-14 |
| 10032357 | Sewer alarm apparatus having a probe | — | 2018-07-24 |
| 9508245 | Sewer alarm apparatus with probe extending through a monitored pipe | — | 2016-11-29 |
| 9127445 | Sewer alarm apparatus with probe extending through a monitored pipe | — | 2015-09-08 |
| 7195146 | Deflector mailbox support system | George E. Riehm | 2007-03-27 |
| 6223982 | Impact resistant mailbox support | — | 2001-05-01 |
| 6149436 | String art device | — | 2000-11-21 |