Filter bag for a vacuum cleaner and also use thereof
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United States of America Patent
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Apr 10, 2012
Issued Date -
N/A
app pub date -
Apr 10, 2007
filing date -
Apr 13, 2006
priority date (Note) -
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Abstract
A filter bag for a vacuum cleaner made of a composite material including at least three layers, at least two layers which include a nonwoven fabric layer and at least one nonwoven fiber layer being connected by a weld.
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