Method and apparatus for automated manufacture of unit filters
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United States of America Patent
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Jul 31, 2001
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N/A
app pub date -
Aug 11, 1999
filing date -
Aug 11, 1999
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Abstract
A method and apparatus for continuously manufacturing filter units; each unit including a flow-through filter medium support frame with at least one sheet of filter medium extending across the flow-through opening of each unit with the edges thereof welded to the peripheral side edges of the unit frame.
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