4. Chemistry: electrical current producing apparatus, product, and
  5. With pressure equalizing means for liquid immersion operation

Alfred E. Steck

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&agr;,&bgr;, &bgr;-trifluorostyrene-based composite membranes

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate

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&agr;,&bgr;,&bgr;-trifluorostyrene-based composite membranes

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate

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.alpha., .beta., .beta.-trifluorostyrene-based composite membran

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
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Gasketed membrane electrode assembly for electrochemical fuel ce

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
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Graft polymeric membranes and ion-exchange membranes formed...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-362025

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