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

Jonathan C. Langmaid

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Compound sliding bevel square

Geometrical instruments – Straightedge type – Multiplane angularly adjustable
Patent

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Electronic increment marker

Geometrical instruments – Gauge – Proportional line segmenter
Reexamination Certificate

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Extendable level

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

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Profile ID: LFUS-PAI-P-862035

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