Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5988573 | Stand for article | — | 1999-11-23 |
| D394660 | Speaker bracket | S. Richard Hrach, Jr. | 1998-05-26 |
| 5433240 | Low-ratio proportioner | — | 1995-07-18 |
| 4572229 | Variable proportioner | James D. Gessner | 1986-02-25 |