Supporting Or Hanging The Elements In The Assembly [g21c-3/32h] *** (spacer Grids Dig. 71); Means Forming Part Of The Assembly For Inserting It Into, Or Removing It From, The Core; Means For Coupling Adjacent Assemblies (means Forming Part Of The Element For Inserting It Into, Or Removing It From, The Core; Or Means For Coupling Adjacent Elements Dig. 49) Patents (Class 976/DIG65)