Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4433785 | Leaner gauge for narrow neck containers | Darius O. Riggs | 1984-02-28 |
| 4278173 | Combined plug and air warp neck finish gauge | Ernest H. Pemberton, John J. Pezzin, Darius O. Riggs | 1981-07-14 |