Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6192646 | Round cladding system | Brian Hillstrom, Matthew Adams | 2001-02-27 |
| 6009683 | Round column cladding system | Brian Hillstrom, Matthew Adams | 2000-01-04 |
| 5938365 | Tubular frame with round corner members | David J. Muir | 1999-08-17 |
| 5930928 | Front-loading poster frame device | Thomas L. Kantola, Ralph W. Dingle | 1999-08-03 |
| 5915656 | Modular floor stand | — | 1999-06-29 |
| 5881528 | Round column cladding system | Brian Hillstrom | 1999-03-16 |
| 5878518 | Sign stand with rolling base | — | 1999-03-09 |
| 5875578 | Sign stand with rolling base | — | 1999-03-02 |
| 5408774 | Countertop adjustable and changeable sign holder | Gary Rigby | 1995-04-25 |
| 5076736 | Corner assembly for display apparatus | Palle L. Jensen | 1991-12-31 |
| 4696136 | Simulated pipe construction | — | 1987-09-29 |
| 4691892 | Sign and sign stand | David U. Hillstrom, James R. Seely, Cecil E. Ursprung | 1987-09-08 |