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| Number | Title | Issue Date |
| 5008967 | Triangular truss walkout cantilever A triangular truss walkout cantilever for displaying railroad warning signals above the individual lanes of a road or highway at a railroad grade crossing is disclosed. The cantilever includes a cantilever arm attached to a vertical roadside mast. The can... | 04/23/1991 |
| 4972641 | Leave-in-place cantilever concrete foundation form A foundation form is pre-fabricated, shipped to job site, placed in a hole, leveled, and concrete is poured into it to form a large surface area footing topped by a pedestal having anchor bolts projecting therefrom to secure a cantilevered arm and mast, s... | 11/27/1990 |
