4. Measuring and testing
  5. Specimen stress or strain, or testing by stress or strain...
  6. In static structures

John R. Irwin

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Bridge movement detector

Measuring and testing – Specimen stress or strain – or testing by stress or strain... – In static structures
Patent

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Electric motor with rotor being a drive wheel

Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate

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Identifying telephone controller system

Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent

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Motorized skate

Land vehicles – Ski or skate appliance or attachment
Reexamination Certificate

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Profile ID: LFUS-PAI-P-468763

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