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E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
E01C5/00—Pavings made of prefabricated single units
E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
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FR570272D1922-11-181922-11-18Système de pavage et dallage pour chaussées de routes, voies urbaines, etc.
ExpiredFR570272A
(fr)