4. Optical waveguides
  5. With optical coupler
  6. Switch

Sumitomo Electric Industries Ltd

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Amorphous carbon coated tool and fabrication method thereof

Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Reexamination Certificate

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Apparatus for inserting a communication wire through a pipeline

Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – By fluid pressure differential in conduit
Patent

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Bismuth oxide superconductor and method of preparing the same

Metal treatment – Process of modifying or maintaining internal physical... – Superconductive metal or alloy
Patent

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Brake switch abnormality detection device

Fluid-pressure and analogous brake systems – Pipeless valves
Patent

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Ceramic superconductor and light transmitting composite wire

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent

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