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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US445906329 Nov 198210 Jul 1984Building construction
US459531428 Dic 198317 Jun 1986Precast concrete culvert section
US468737117 Abr 198618 Ago 1987Con/Span Culvert Systems, Inc.Precast concrete culvert section
US479703017 Ago 198710 Ene 1989Con/Span Culvert Systems, Inc.Precast concrete culvert system
US485477529 Feb 19888 Ago 1989Con/Span Culvert Systems, Inc.Precast concrete culvert system
US49938728 Ago 198919 Feb 1991Con/Span Culvert Systems, Inc.Precast concrete culvert system
US555179815 Sep 19943 Sep 1996Culvert end wall retainer system
US60929626 Ago 199825 Jul 2000To-Am Industrial Co., Ltd.Prefabricated pre-cast culvert provided with couplings
US699140217 Oct 200231 Ene 2006StormTrap LLCMethods and modules for an underground assembly for storm water retention or detention
US716005821 Oct 20059 Ene 2007StormTrap LLCMethods and module for an underground assembly for storm water retention or detention
US73443357 Dic 200618 Mar 2008StormTrap LLCMethods and modules for an underground assembly for storm water retention or detention
US75564519 Sep 20057 Jul 2009Contech Bridge Solutions Inc.Precast concrete bridge and headwall assembly and method of production
USD6178675 Mar 200915 Jun 2010StormTrap LLCModule for an underground assembly for storm water retention or detention