Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887903 | Apparatus for reading height of measurement column | Frank D. Frisco, Keith B. Silverman | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887903 | Apparatus for reading height of measurement column | Frank D. Frisco, Keith B. Silverman | 1989-12-19 |