Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5892750 | Multi-ported robotic shuttle for cartridge retrieval and insertion in a storage library subsystem | John A. Barkley, Robert J. Schaefer | 1999-04-06 |
| 5867458 | Magazine for holding computer data storage cartridges | John A. Barkley, Robert J. Schaefer | 1999-02-02 |
| 5815340 | Apparatus and methods for cartridge retrieval and insertion in a storage library subsystem including a robotic shuttle having a sole rocker beam | John A. Barkley, Robert J. Schaefer | 1998-09-29 |
| 5661287 | Multi-purpose laser/optical sensor in a storage library subsystem | Robert J. Schaefer, Paul Thomas Currin | 1997-08-26 |
| 5622470 | Method and apparatus for adaptive cartridge retrieval and insertion in a storage library subsystem | Robert J. Schaefer, Thomas P. Jackson, Richard E. Sills | 1997-04-22 |