4. Plastic article or earthenware shaping or treating: apparatus
  5. Means withdrawing trowel type shaping member from within...

Ronald J. Walchek

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Cap rest assembly for packerhead/vibration system concrete pipe

Plastic article or earthenware shaping or treating: apparatus – Means withdrawing trowel type shaping member from within...
Patent

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Means for engaging, lifting and transporting concrete pipe molds

Static molds – Container-type molding device – Including means securing molding device to detachable,...
Patent

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Means for engaging, lifting and transporting concrete pipe molds

Static molds – Container-type molding device – Plural article forming mold – or molds with community feature
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