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1. (WO1997019231) A PREFABRICATED STRUCTURE FOR THE CONSTRUCTION OF OVERHEAD OR UNDERGROUND WORKS
Available information on National Phase entries(more information)
OfficeEntry DateNational NumberNational Status
United States of America 12.05.199809068647
European Patent Office 17.06.19981996938201Published: 02.09.1998
Granted: 25.07.2001