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US5806250ASep 15, 1998

Multidirectional mechanic hysteresis anti-seismic device for insulating the bases of constructional systems having high matual displacements

FIP IND23 citations83
US5597239AJan 28, 1997

Spheric cap bearing device for safely connecting elements of bridges, viaducts, buildings and the like

FIP IND30 citations80
US4637656AJan 20, 1987

Water jet scarifying apparatus

FIP IND11 citations69