Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D409348 | Dolly track | — | 1999-05-04 |
| D401951 | Dolly track switch | Steven Spielberg | 1998-12-01 |
| 4989782 | Rail and track | — | 1991-02-05 |
| 4855171 | Sign-making materials | Kenneth W. A. Elcock | 1989-08-08 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D409348 | Dolly track | — | 1999-05-04 |
| D401951 | Dolly track switch | Steven Spielberg | 1998-12-01 |
| 4989782 | Rail and track | — | 1991-02-05 |
| 4855171 | Sign-making materials | Kenneth W. A. Elcock | 1989-08-08 |