Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8220874 | Dump device for side dump trailer | Leon J. Heider | 2012-07-17 |
| 7992942 | Dump device for side dump trailer | Leon J. Heider | 2011-08-09 |
| 6932433 | Hopper closure assembly and method of using same | Leon J. Heider | 2005-08-23 |
| 5782524 | Curved wall trailer construction | Merle J. Heider, Leon J. Heider, Craig J. Heider | 1998-07-21 |
| 5780783 | Vehicle load weighing system | Leon J. Heider, Merle J. Heider, Craig J. Heider, Lawrence H. Holten, James Scholler | 1998-07-14 |
| 5664918 | Cargo tie down device | Merle J. Heider, Leon J. Heider, Craig J. Heider | 1997-09-09 |
| RE35580 | Trailer construction | Merle J. Heider, Leon J. Heider, Craig J. Heider | 1997-08-12 |
| 5326156 | Trailer construction | Merle J. Heider, Leon J. Heider, Craig J. Heider | 1994-07-05 |
| 5308100 | Trailer coupler assembly | Merle J. Heider, Leon J. Heider, Craig J. Heider | 1994-05-03 |
| 5303972 | Remote control for box top closure | Merle J. Heider, Leon J. Heider, Craig J. Heider | 1994-04-19 |
| 5284356 | Transporting system and method for using same | Merle J. Heider, Leon J. Heider | 1994-02-08 |
| 5090720 | Transporting system and method for using same | Merle J. Heider, Leon J. Heider | 1992-02-25 |
| 4923210 | Suspension and leveling system for a vehicle | Merle J. Heider, Leon J. Heider | 1990-05-08 |
| 4733876 | Suspension and leveling system for a vehicle | Merle J. Heider, Leon J. Heider | 1988-03-29 |
| 4529098 | Top closure for a rectangular box | Merle J. Heider, Leon J. Heider | 1985-07-16 |
| 4518193 | Top closure for a rectangular box and method for using same | Merle J. Heider, Leon J. Heider | 1985-05-21 |