4. Measuring and testing
  5. Vibration
  6. By mechanical waves

John W. McElroy

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Acoustic emission warning system for a fiberglass member

Measuring and testing – Vibration – By mechanical waves
Patent

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Method and apparatus for non-invasive monitoring of solenoid val

Electricity: measuring and testing – Electromechanical switching device – Relay
Patent

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Non-invasive system and method for inspection of valves

Boots – shoes – and leggings
Patent

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Rotating source verification device

Communications: electrical – Condition responsive indicating system – With particular system function
Patent

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System for adding sound to pictures

Photography – With data recording – Sound
Reexamination Certificate

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Profile ID: LFUS-PAI-P-130228

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