4. Metal working
  5. Method of mechanical manufacture
  6. Electrical device making

Jean Arroyo

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Method for making a fuel cell with large active surface and...

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Miniature fuel cell base module comprising micro-volumes...

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
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Profile ID: LFUS-PAI-P-3026901

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