Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020829 | Two-way communication sheets in the form of double post card, double letter sheet, and the like | Kenji Shibahara | 1991-06-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020829 | Two-way communication sheets in the form of double post card, double letter sheet, and the like | Kenji Shibahara | 1991-06-04 |