4. Chucks or sockets
  5. Socket type
  6. Self-grasping

Richard Howk

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Aeration apparatus and method

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

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Axial-pumping impeller apparatus and method for...

Agitating – Stirrer within stationary mixing chamber – Pump type
Reexamination Certificate

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Chuck mechanism for detachably connecting impeller shaft and dri

Chucks or sockets – Socket type – Self-grasping
Patent

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Dual direction mixing impeller and method

Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Reexamination Certificate

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Radial disc impeller apparatus and method

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

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Profile ID: LFUS-PAI-P-1804040

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