Patent classifications
E
FIXED CONSTRUCTIONS
Load children
E04
BUILDING
Load children
E04C
STRUCTURAL ELEMENTS; BUILDING MATERIALS
Load children
3/00
Structural elongated elements designed for load-supporting
Load children Filter patents View analytics View as hierarchy
E04C3/005
Girders or columns that are rollable, collapsible or otherwise adjustable in length or height
Filter patents View analytics View as hierarchy