E04C 3/28 of materials not covered by groups E04C3/04 - E04C3/20
Introduced: September 1968
Title
Titles differ between systems:
IPC: of materials not covered by groups
CPC: of materials not covered by groups E04C3/04 - E04C3/20
Full Title
Full titles differ between systems:
Structural elongated elements designed for load-supporting > Joists; Girders, trusses, or truss-like structures, e.g. prefabricated; Lintels; Transoms > of materials not covered by groups
Structural elongated elements designed for load-supporting (as building aids E04G) > Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; (E04C3/38 takes precedence; for structures characterised by movable, separable, or collapsible parts E04B1/343; ) > of materials not covered by groups E04C3/04 - E04C3/20
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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