| http://www.w3.org/ns/prov#value | - Most suitable synthetic organic polymeric plastic materials for such body 213 are any of the polyether imides, such as those sold under the ULTEM??? trademark by General Electric Corporation, but others of the ???engineering plastics,??? fiber reinforced plastics, such as glass fiber reinforced polyesters or polyethers, or other polymers known to be of good strengths and/or transmissive of microwa
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