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2001-07-12
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1984-08-08
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1994-05-25
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1992-07-15
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1993-11-02
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1992-04-15
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1992-08-19
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1990-08-29
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1991-05-29
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1991-06-19
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1992-08-05
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1993-10-13
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1991-09-15
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1992-07-08
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1993-03-03
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1994-11-30
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1990-11-07
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1996-09-30
Method of pleating garments and pleated garments
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1991-07-16
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1992-11-16
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1995-01-04
A process of making a filter, and the filter
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1990-03-14
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1991-09-15
Lamellar fibrous filter and method of its production
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1989-09-04
Method of manufacturing non-woven filter fabric and non-woven filter fabric as such
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1993-04-21
Method and apparatus for forming non-woven fabric