4. Geometrical instruments

Richard R. Bahn

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Air-purifying system

Gas separation – Combined or convertible – In environmental air enclosure
Reexamination Certificate

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Air-purifying system blower module with exhaust chute

Gas separation – With gas flow effecting means
Reexamination Certificate

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Commercial air filter assembly and filter assembly and...

Gas separation: apparatus – Solid sorbent apparatus – Plural diverse separating means
Reexamination Certificate

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Electrical connector for oxidized surface

Geometrical instruments
Patent

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Low-profile air filter module

Gas separation: processes – Filtering
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1462951

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