Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021901 | Ferris wheel magnetic tape cassette storage and handling apparatus | William J. Ullrich, Frederic F. Grant | 1991-06-04 |
| 4984107 | Apparatus for transporting a magnetic tape cassette | John P. Grant, Frederic F. Grant | 1991-01-08 |
| 4826097 | Reel spindle apparatus with internal clamping member | Frederic F. Grant | 1989-05-02 |