Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838452 | Shutter system for electrical component supply tape feeder | Daniel Hamilton, Richard Porterfield | 1989-06-13 |
| 4735341 | Feeder for electrical component supply tapes | Daniel Lee Hamilton, Richard Porterfield | 1988-04-05 |