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IL45064D0
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A filter element for liquid or gaseous media
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ZA7400421B
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Impregnating filter materials
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ZA7400419B
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Combination filter for purifying liquids
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ZA7400394B
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Filter material in the form of felt for purifying liquids
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ES417815A1
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Enclosed filtering unit for filtering and/or treating liquid or gaseous media
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ES417814A1
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Device for filtering and/or treating liquid or gaseous media
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CH558670A
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Portable water treatment apparatus - with replaceable filter element
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CH558669A
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Compact filter element with two clamped plates - and filter between is clean to handle esp. has sealed edges
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CH548954A
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Liquid filtering appts - esp for drinking water purification
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CH550596A
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Water treatment appts - having a two-part filter housing
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