E04G 21/06 Solidifying concrete, e.g. by application of vacuum before hardening (devices for solidifying also soil E02D3/02; for road building E01C19/00; )
Introduced: September 1968
Title
Titles differ between systems:
IPC: Compacting concrete, e.g. by application of vacuum before hardening
CPC: Solidifying concrete, e.g. by application of vacuum before hardening (devices for solidifying also soil E02D3/02; for road building E01C19/00; )
Full Title
Full titles differ between systems:
Preparing, conveying, or working-up building materials or building elements; Other devices or measures for constructional work > Conveying or working-up concrete or similar masses able to be heaped or cast > Compacting concrete, e.g. by application of vacuum before hardening
Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work (conveying in general B65G; lifting devices B66; working stone-like materials B28D; measuring instruments G01) > Conveying or working-up concrete or similar masses able to be heaped or cast (in connection with finishing work E04F; construction and surfacing of floorings made of similar material to roads or pavements E01C; in connection with barrages E02B7/00; in connection with foundations E02D15/00; composition of concrete C04B; working concrete in general, e.g. mixing machines B28C) > Solidifying concrete, e.g. by application of vacuum before hardening (devices for solidifying also soil E02D3/02; for road building E01C19/00; )
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
Child Classifications
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