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ROBERT ALWYN ARNOLD STEPHEN PI
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ROBERT ALWYN ARNOLD STEPHEN PI
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Application filed by ROBERT ALWYN ARNOLD STEPHEN PIfiledCriticalROBERT ALWYN ARNOLD STEPHEN PI
Application grantedgrantedCritical
Publication of FR390767ApublicationCriticalpatent/FR390767A/en
Construction of beams and bridges, straight or arched, in reinforced concrete or other materials, by means of elements assembled by `` wedge-dihedral '' joints designed in such a way as to allow the almost total elimination of usual hangers, scaffolding or formwork