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Science Technology Structural Engineering Bridge History Keystone Bridge Company
Formed in 1865 by Andrew Carnegie.
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Descriptive Catalogue of Wrought-Iron Bridges
Facsimile of the company catalogue published around 1874.
Historic Bridges of the Midwest
Photographic records of three bridges constructed by Keystone.
Keystone Bridge Co. v Phoenix Iron Co.
Full text of case before the U.S. Supreme Court in 1877. Concerns the infringement of two patents belonging to the company.
Historic Bridges of the Midwest
Photographic records of three bridges constructed by Keystone.
Descriptive Catalogue of Wrought-Iron Bridges
Facsimile of the company catalogue published around 1874.
Keystone Bridge Co. v Phoenix Iron Co.
Full text of case before the U.S. Supreme Court in 1877. Concerns the infringement of two patents belonging to the company.
Last update:
March 19, 2021 at 1:12:23 UTC
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