4. Geometrical instruments
  5. Straight-line light ray type
  6. Vertical and horizontal angle measurer

David W. Harris

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Confocal microscope system

Optical: systems and elements – Compound lens system – Microscope
Patent

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Formaldehyde production process

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent

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Laser goniometer

Geometrical instruments – Straight-line light ray type – Vertical and horizontal angle measurer
Patent

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Methanol purification

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent

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Pool table rail-mirror

Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent

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Profile ID: LFUS-PAI-P-245529

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