Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4484071 | Method and apparatus for determining the location of graduated marks in measuring applications | Peter Webster | 1984-11-20 |
| 4463259 | Method and apparatus for measuring the displacement of a radiation-restrictive mark, as in a surveying instrument | Peter Webster | 1984-07-31 |