Derniers inventions, produits et services
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2014
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Invention
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Film perforation apparatus.
An apparatus for creating perforations in wrapping film uses a compo... |
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2013
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Invention
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Film perforation method. A method of creating perforations in wrapping film uses an apparatus tha... |
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2010
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Invention
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Film perforation apparatus. A rotating perforation apparatus contains a plurality of needle point... |
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2008
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Invention
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Film perforation apparatus.
A rotating perforation apparatus contains a plurality of needle poin... |
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