4. Measuring and testing
  5. Liquid level or depth gauge
  6. Sight glass

James A. Willis

Inventor

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Knife assembly method

Metal working – Method of mechanical manufacture – Disassembling
Reexamination Certificate

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Knife holder

Cutting – Rotatable disc tool pair or tool and carrier – With means to permit replacement of tool
Reexamination Certificate

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Measuring tank sight glass

Measuring and testing – Liquid level or depth gauge – Sight glass
Patent

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Method and apparatus for automated inspection of fastener holes

Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent

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Profile ID: LFUS-PAI-P-530109

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