4. Planetary gear transmission systems or components
  5. Differential planetary gearing
  6. Including means to selectively apply rotational power to...

Richard L. Willis

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Apparatus and method to achieve multiple effective ratios...

Planetary gear transmission systems or components – Differential planetary gearing – Including means to selectively apply rotational power to...
Reexamination Certificate

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Audio porting assembly

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Reexamination Certificate

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