E04H 12/12 of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
Introduced: September 1968
Title
Titles differ between systems:
IPC: of concrete or other stone-like material, with or without internal or external reinforcement, e.g. with metal coverings, with permanent form elements
CPC: of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
Full Title
Full titles differ between systems:
Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures > Structures made of specified materials > of concrete or other stone-like material, with or without internal or external reinforcement, e.g. with metal coverings, with permanent form elements
Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures (cooling towers E04H5/12; derricks for oil drilling E21B15/00) > Structures made of specified materials > of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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