4. Alloys or metallic compositions
  5. Copper base
  6. Other refractory metal containing

Sumitomo Metal & Mining Co., Ltd.

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Absorption type multi-layer film ND filter

Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate

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Absorption type multi-layer film ND filter

Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate

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Absorption type multi-layer film ND filter

Optical: systems and elements – Absorption filter – Neutral or graded density
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Absorption type multi-layer film ND filter and process for...

Optical: systems and elements – Absorption filter – Neutral or graded density
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Active material for positive electrode of lithium secondary...

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
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