Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9188495 | Strain sensing cable | Christopher H. Lambert, Ajit Balagopal | 2015-11-17 |
| 5667672 | Aquarium undergravel filter | Steven Convertino | 1997-09-16 |
| D353649 | Aquarium filter bag | Allan H. Willinger | 1994-12-20 |
| 5282961 | Floating impeller assembly | Robert Ellis, Allan H. Willinger, Gene Fleischer | 1994-02-01 |
| 4861468 | Rotor impeller assembly | Allan H. Willinger | 1989-08-29 |