Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682131 | Retractable tamper resistant annunciator | — | 1997-10-28 |
| 5657981 | Sheet separating apparatus for removing sheets one-by-one from at least one stack of sheets | Kenneth Kelly, Adam J. Crighton, George Petrie, Robert Suttie, Robert James Petrie +1 more | 1997-08-19 |