Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8839593 | Pre-cast blocks for use in column construction | David Barrett, Derek Zimmerman, Randy Quaintance, John C. Purvis | 2014-09-23 |
| 5235667 | Heating method and assembly utilizing electric heating elements in conjunction with combustion | Douglas M. Canfield | 1993-08-10 |
| 4521267 | Composite label web and method of labeling | — | 1985-06-04 |
| 4214024 | Composite label web and method of making same | — | 1980-07-22 |