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Air filtering system

Gas separation – With means for advancing clean portions of continuous or...
Patent

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Automatic air filter changer

Gas separation – With means for advancing clean portions of continuous or... – Advancing means initiated by flow – pressure – or pressure...
Patent

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Control means and automatic roll-type filter

Gas separation – With means for advancing clean portions of continuous or... – Advancing means initiated by flow – pressure – or pressure...
Patent

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Filter apparatus

Gas separation – With means for advancing clean portions of continuous or... – Indefinite or running length
Patent

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Filter for air handling equipment

Gas separation – With means for advancing clean portions of continuous or... – Indefinite or running length
Patent

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Filter medium layered between supporting layers

Gas separation – With means for advancing clean portions of continuous or... – Indefinite or running length
Patent

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Filter screen assembly for mounting over an air intake opening

Gas separation – With means for advancing clean portions of continuous or...
Reexamination Certificate

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Filter screen assembly for use with an air intake unit

Gas separation – With means for advancing clean portions of continuous or... – Indefinite or running length
Patent

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Filtering assembly for air intake

Gas separation – With means for advancing clean portions of continuous or...
Patent

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Furnace air filter

Gas separation – With means for advancing clean portions of continuous or... – Indefinite or running length
Patent

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Sealing apparatus in a belt-type filter

Gas separation – With means for advancing clean portions of continuous or... – Indefinite or running length
Patent

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Vacuum filter belt apparatus

Gas separation – With means for advancing clean portions of continuous or... – Advancing means initiated by flow – pressure – or pressure...
Patent

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