Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942414 | Easy-to-load sheet protectors | Galen C. Wong, Matthew A. Grace, Martin Daffner, Kocheng Michael Wu | 2005-09-13 |
| 4758022 | Writing tablet with two-ply cover | Edward Podosek | 1988-07-19 |
| 4531667 | Expandable envelope file | — | 1985-07-30 |