Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942444 | Skid positioning machine | — | 2005-09-13 |
| 6857350 | Appliance and process for reducing distortion of slit metal sheet | Kalin Liefer | 2005-02-22 |
| 6460391 | Clamping assembly for sheet metal leveling machine | Kalin Liefer | 2002-10-08 |
| 6435352 | Sorting machine for stacks of sheet metal panels | Kalin Liefer | 2002-08-20 |
| 6092709 | Machine for advancing a sheet metal strip in measured increments | Kalin Liefer | 2000-07-25 |
| 4312325 | Solar heating system | Kenneth Voges, Mark F. O'Hara, Thomas Schmitt | 1982-01-26 |