4. Stock material or miscellaneous articles
  5. Web or sheet containing structurally defined element or...
  6. Including a second component containing structurally defined...

David Henry Pearce

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Aerogels, piezoelectric devices, and uses therefor

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Reexamination Certificate

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Camera lens positioning using a electro-active device

Photography – Having variable focal length of camera objective – Having focus operation
Reexamination Certificate

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Electro active devices

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate

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Loudspeaker using an electro-active device

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electrostrictive – magnetostrictive – or piezoelectric
Reexamination Certificate

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Sensor using electro active curved helix and double helix

Measuring and testing – Dynamometers – Responsive to force
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Profile ID: LFUS-PAI-P-2691332

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