4. Plastic and nonmetallic article shaping or treating: processes
  5. Forming continuous or indefinite length work
  6. Shaping by extrusion

Harold Porosoff

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Melt-spinning acrylonitrile polymer fiber from low molecular wei

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent

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Melt-spinning acrylonitrile polymer fibers

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent

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Rigid polyurethane and polyisocyanurate foams

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
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