Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6959599 | Level detector for storage tanks for fluids | Robert Feldstein, Donald Edward Hewson | 2005-11-01 |
| 6880396 | Level indicator having thermochromic leucodye inks | — | 2005-04-19 |