English: Wendel Bollman's bridge patent. On January 6, 1852, Bollman was awarded patent No. 8,624 for his unique design for railroad bridges known as the Bollman truss. This is a diagram of the various features of the bridge patent and its members.
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US Patent office PDF, digitized by Google; also available at USPTO office in the public domain.
== Summary == {{Information | Description = On January 6, 1852, Bollman was awarded patent No. 8,624 for his unique design for railroad bridges known as the [[Wendel_Bollman#Bridge_designs|Bollman truss]]. This is a diagram of the various features ...
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