Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335960 | Apparatus for detecting the presence of surface irregularities in articles made of transparent material | Richard I. Ashcroft | 1982-06-22 |
| 4250405 | Apparatus for identifying production codes on articles | Richard I. Ashcroft, Anthony E. P. Monson, David Michael Weeks | 1981-02-10 |