Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640671 | Adobe block press | — | 1987-02-03 |
| 4557681 | Apparatus for forming adobe blocks | Jack L. Elkins | 1985-12-10 |
| 4354162 | Wide dynamic range control amplifier with offset correction | — | 1982-10-12 |
| 4205276 | Audio amplifier with low AM radiation | William H. Gross | 1980-05-27 |