4. Chemistry: electrical current producing apparatus, product, and
  5. Fuel cell, subcombination thereof, or method of making or...
  6. Method of making a fuel cell, fuel cell stack, or...

K Walker

Examiner

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Membrane electrode assembly prepared by direct spray of...

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Method of making a fuel cell – fuel cell stack – or...
Reexamination Certificate

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Method for making a lithium ion battery dischargeable to...

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer – spacer or materials for use therewith
Reexamination Certificate

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