Which revolutionary building product, first patented in 1902, allowed architects to create the first modern skyscrapers with open floor plans and curtain wall facades?

The architecture industry has been transformed by innovative building materials and products that enabled revolutionary designs. From soaring skyscrapers to sustainable structures, these products changed how architects approach their craft. Test your knowledge about a pivotal product innovation that reshaped architectural possibilities in the early 20th century and continues to influence design today.

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Reinforced concrete (steel-embedded concrete)
Structural insulated panels (SIPs)
Laminated safety glass
Aluminum extrusion profiles