4. Metal working
  5. Method of mechanical manufacture
  6. Valve or choke making

Research International, Inc.

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Air sampler

Measuring and testing – Sampler – sample handling – etc. – With constituent separation
Reexamination Certificate

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Assay methods and apparatus

Chemistry: analytical and immunological testing – Involving an insoluble carrier for immobilizing immunochemicals – Carrier is inorganic
Patent

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Disposable fluidic circuit cards

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Sampler – constituent separation – sample handling – or sample...
Patent

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Enhanced waveguide and method

Chemistry: analytical and immunological testing – Optical result – With fluorescence or luminescence
Reexamination Certificate

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Enhanced waveguide and method

Chemistry: molecular biology and microbiology – Apparatus – Including measuring or testing
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