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Publication of GR960100344ApublicationCriticalpatent/GR960100344A/en
Underground Structures, Protecting, Testing And Restoring Foundations
(AREA)
Abstract
The invention refers to an extension ring for evening manholes with road surface consisting of a cast-iron piece having 4, 6, or 8 threaded holes (depending on the form) destined to attach to the existing manhole base and whereon is placed the manhole cover.
GR960100344A1996-10-111996-10-11Extension ring for evening manholes with road surface
GR960100344A
(en)