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Brush containing polypropylene bristles
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Crimped binding strap and method of making same
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Filamentary articles
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Flagged brush bristles
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Foamed polypropylene filaments
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Improved method of making shaped articles such as filaments and brush bristles of isotactic polypropylene and articles so made
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Isotactic polpropylene brush bristle and brush containing such bristles
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Method of making oriented filamentary article of isotactic polypropylene
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Apparatus for feeding pulverulent material
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Method of and apparatus for dusting fibrous material
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Method of making fibrous bats
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