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| Number | Title | Issue Date |
| 4520733 | Guide rail and follower wheel construction for monorail A guide rail and follower wheel construction for a monorail are disclosed. The monorail vehicle follower wheel has a radially directed, circumferential groove shaped to fit over a raised track portion, and the cross sectional shape of the wheel groove and... | 06/04/1985 |
| 4378909 | Fish-plates for electrically conducting railway rails A fish-plate comprises two sections which can be fitted, by way of a toothed surface, against corresponding toothed surfaces of two adjacent electrically conductive rails of a railway using bolts to tighten the sections towards each other. The teeth exten... | 04/05/1983 |
