| http://www.w3.org/ns/prov#value | - The die materials are typically made of a plastic insulating material such as Delrin???, an acetyl resin manufactured by E.I. duPont de Nemours & Co. [0023] Reference to the enlarged cross-section view FIG. 2 illustrates that the two representative probes 26, 28 include probe tips 26 a, 28 a respectively protruding from holes 21 in the lower face of lower die 20 and exposed heads 26 b, 28 b respec
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