| Patents for E01D 6 - Truss-type bridges (307) | |
|---|---|
| 08/1981 | |
| 08/11/1981 | US4282619 Truss structure |
| 05/1981 | |
| 05/12/1981 | CA1100713A1 Unit construction steel bridges |
| 03/1981 | |
| 03/10/1981 | CA1097007A1 Lightweight modular, truss-deck bridge system |
| 09/1980 | |
| 09/23/1980 | US4223495 Prestressed steel support structure and method of erecting the same |
| 05/1980 | |
| 05/06/1980 | US4200946 Load-supporting structures |
| 10/1978 | |
| 10/17/1978 | US4120065 Lightweight modular, truss-deck bridge system |
| 02/1978 | |
| 02/28/1978 | US4075727 Frame structure, especially for a portable bridge |