4. Measuring and testing
  5. Wind tunnel: aerodynamic wing and propeller study

J. Chapman

Examiner

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Acoustic indicator of vacuum level in containers

Signals and indicators – Alarms – Reeled material end
Patent

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Aerodynamic data collection procedure

Measuring and testing – Wind tunnel: aerodynamic wing and propeller study
Patent

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Apparatus for sampling material from a remote location

Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent

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Disposable bib construction

Apparel – Garment protectors – Aprons
Patent

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Disposable irrigation gauge

Measuring and testing – Moisture content or absorption characteristic of material
Patent

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