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n4freepatentsonline.
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isa:9778019
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on shoe including a substantially vertical wall engageable with the friction surface on the upright columns and a friction face, wherein the friction shoes maintain substantial squareness of the bolster with the sideframes; and an elastomeric pad disposed on a roof of the pedestal opening so as to be disposed between the pedestal and the bearing adapter in use. 14.
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