Vacuum cleaner bag
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United States of America Patent
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Sep 14, 1993
Issued Date -
N/A
app pub date -
Jun 15, 1992
filing date -
Mar 22, 1991
priority date (Note) -
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Abstract
A vacuum cleaner filter having an outer textile fabric material laminated to a non-woven composite material. The composite material comprises an inner and an outer cover layer of a spun-bonded, non-woven web material, sandwiching at least one intermediate melt-blown layer.
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