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Application filed by Porfirio Penafiel Y Cia S A DefiledCriticalPorfirio Penafiel Y Cia S A De
Priority to MX9205193ApriorityCriticalpatent/MX9205193A/en
Publication of MX9205193ApublicationCriticalpatent/MX9205193A/en
Son piezas prefabricadas de concreto armado para substituir los pozos hechos en el lugar (generalmente de tabique o de concreto colado en sitio), con las distintas formas y tamaños que la canalización telefónica requiere.They are prefabricated pieces of reinforced concrete to replace wells made on site (generally partitions or cast-in-place concrete), with the different shapes and sizes required by telephone channeling.
MX9205193A1992-09-111992-09-11
PREFABRICATED WELLS FOR TELEPHONE CHANNELS.
MX9205193A
(en)
LARGE, TENSIONED ROOF FIELD, WHICH CONSISTS OF SEVERAL MANUFACTUREED ROOF ELEMENTS OF REINFORCED CONCRETE, AS WELL AS PROCEDURES FOR THE MANUFACTURE OF ROOF ELEMENTS AND ROOF FIELDS