Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302242 | Process and composition for deinking dry toner electrostatic printed wastepaper | Mary Beth Letscher | 1994-04-12 |
| 5282997 | Process and composition for deinking dry toner electrostatic printed wastepaper | Mary Beth Letscher | 1994-02-01 |