Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5743137 | Magnetic float assembly | David E. Brown | 1998-04-28 |
| 5343826 | Fluid indicator assemblies for sight flow apparatus | David E. Brown | 1994-09-06 |
| 5297429 | Sanitary sight indicator | David E. Brown | 1994-03-29 |
| 5249464 | Sight flow apparatus with cartridge | David E. Brown | 1993-10-05 |
| 5243929 | Tubular sanitary sight indicator | David E. Brown | 1993-09-14 |