| http://www.w3.org/ns/prov#value | - In apparatus for impregnataing articles'with a viscous material, said apparatus including a vacuum chamber in which said articles are contained, the improvement comprising means for dispensing said material onto said articles through an opening insaid chamber, said means including: v a puck member placed over said chamber opening and having sealing means thereon to provide an airtight seal, said p
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