Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D310953 | Panel spacer pad | Rudolf Seifert | 1990-10-02 |
| 4498270 | Support for positioning reinforcing rods or mesh in concrete or the like | — | 1985-02-12 |
| D254168 | Cattle slat reinforcing bar support | — | 1980-02-12 |