Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D858029 | Mailbox insert | — | 2019-08-27 |
| D723802 | Carrying case with integrated whiteboard | — | 2015-03-10 |
| 6124012 | Solid phase extraction disk and apparatus for enhanced recovery and precision | Alfonso Liu, James C. Robbins, Joseph Stefkovich | 2000-09-26 |
| 5849249 | Solid phase extraction apparatus for enhanced recovery and precision | Alfonso Liu, James C. Robbins, Joseph Stefkovich | 1998-12-15 |
| 4212487 | Hose coupling | Willard G. Triest | 1980-07-15 |