4. Photography and optical equipment
  5. Optical article not elsewhere specified
  6. Lens or objective

Irving Rips

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Apparatus for manufacturing plastic lenses

Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control
Patent

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Calibration instrument

Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent

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Eye glass frame

Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent

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Lens calibration gauge

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

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Lens for eye glasses

Photography and optical equipment – Ophthalmic article – Lens
Patent

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Profile ID: LFUS-PAI-P-470748

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