초록 ▼

A structural element comprising opposed first and second, laterally and longitudinally extended, generally planar surface structures each having a closed figure pattern of ribbing projecting therefrom toward the opposite surface structure, the ribbing being of respective heights to bridge the space

A structural element comprising opposed first and second, laterally and longitudinally extended, generally planar surface structures each having a closed figure pattern of ribbing projecting therefrom toward the opposite surface structure, the ribbing being of respective heights to bridge the space between the surface structures, the opposed ribbing being interlocked in registered, mating relation.

대표청구항 ▼

Structural element comprising opposed first and second, laterally and longitudinally extended, generally planar surface structures each having a closed figure pattern of ribbing projecting therefrom toward the opposite surface structure, said ribbing being of respective heights to bridge the space b

Structural element comprising opposed first and second, laterally and longitudinally extended, generally planar surface structures each having a closed figure pattern of ribbing projecting therefrom toward the opposite surface structure, said ribbing being of respective heights to bridge the space between said surface structures, said opposed ribbing being interlocked in registered, mating relation.