Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5479223 | Film conversion sprocket | Robert D. Lipscomb | 1995-12-26 |
| 4900293 | 4:3 perf conversion sprocket | — | 1990-02-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5479223 | Film conversion sprocket | Robert D. Lipscomb | 1995-12-26 |
| 4900293 | 4:3 perf conversion sprocket | — | 1990-02-13 |