Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5000040 | Method and apparatus for remote monitoring of valves and valve operators | Arthur G. Charbonneau, Stanley N. Hale | 1991-03-19 |
| 4891975 | Method and apparatus for remote monitoring of valves and valve operators | Arthur G. Charbonneau, Stanley N. Hale | 1990-01-09 |
| 4831873 | Method and apparatus for remote monitoring of valves and valve operators | Arthur G. Charbonneau, Stanley N. Hale | 1989-05-23 |
| 4672310 | Switch position sensing device for use with valve operators | — | 1987-06-09 |