Reference PAH994

The suspension bridge inventory reference with abbreviation "PAH994" appears below with the list of all bridges citing this reference. Also view the complete list of references.


Hallidie, Andrew S. "Improvements In The Construction Of Suspension Bridges" Great Britain Patent no. 994 [1867]. April 3, 1867.
(PAH994)
  • Hallidie states the nature of this invention is primarily "for the purpose of obtaining a maximum rigidity in the roadway and general structure."

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