Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5838783 | Smart directory management | Frank Cheng, Randall J. Penning | 1998-11-17 |
| 5737392 | Two-pass directory entry device and method | Frank Cheng, Randall J. Penning | 1998-04-07 |
| 5717740 | Telephone station account number dialing device and method | Randall J. Penning | 1998-02-10 |
| 5027974 | Cotton roll dispenser | Jack D. Bankier | 1991-07-02 |