4. Geometrical instruments
  5. Indicator of direction of force traversing natural media
  6. Level or plumb, terrestrial gravitation responsive

Richard A. Doyle

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Assembly for plumb bob and line

Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent

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Man-machine interface

Data processing: generic control systems or specific application – Generic control system – apparatus or process – Having operator control interface
Reexamination Certificate

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Plumb bob

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent

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Profile ID: LFUS-PAI-P-1021816

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