4. Geometrical instruments
  5. Area integrators
  6. Electrical

Herbert H. Mathews

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Apparatus for polishing the edges of lenses

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent

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Blocked lens thickness gauge

Geometrical instruments – Area integrators – Electrical
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Lens blocking apparatus

Metal founding – Means to shape metallic material – Including means to hold or position preformed product part...
Patent

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Method and apparatus for aligning an ophthalmic lens during a bl

Optics: measuring and testing – By alignment in lateral direction – With registration indicia
Patent

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Profile ID: LFUS-PAI-P-931221

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