Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365503 | Apparatus for calibrating meter prover encoder | William Wai Yan Ho, William F. Hall, Eugene B. Perrine | 1982-12-28 |
| 4347731 | Control apparatus for meter prover | Eugene B. Perrine | 1982-09-07 |