4. Electricity: measuring and testing
  5. Magnetic
  6. With means to create magnetic field to test material

Frederick R. Chamberlain, IV

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Advanced photo system format selector

Photography – With data recording – Magnetically on film or film cassette
Patent

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Apparatus for sensing magnetic fields from a wide range of magne

Registers – Coded record sensors – Particular sensor structure
Patent

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Dual purpose camera

Photography – Camera combined with or convertible to diverse art device
Patent

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Framing apparatus for a camera

Photography – With viewfinder – Pose reflector
Patent

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Magnetic sensor for ink detection

Incremental printing of symbolic information – Ink jet – Controller
Patent

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Profile ID: LFUS-PAI-P-673588

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