4. Movable or removable closures
  5. With means mounting closure for swinging
  6. With biasing means

Andrew C. McCullough

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Apparatus for introducing a gas into a body of liquid

Gas and liquid contact apparatus – Contact devices – Rotating
Reexamination Certificate

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Assist mechanism for lifting and closing large enclosures

Movable or removable closures – With means mounting closure for swinging – With biasing means
Reexamination Certificate

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Lift assist mechanism for lifting large enclosures

Movable or removable closures – With means mounting closure for swinging – With biasing means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2704436

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