Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4273455 | Justifying text writing composing machine | W. S. Gubelmann, deceased, William R. Grier | 1981-06-16 |
| 4265558 | Differential key lock mechanism for justifying text writing composing machine | William S. Gubelmann, deceased, William R. Grier | 1981-05-05 |