4. Synthetic resins or natural rubbers -- part of the class 520 ser
  5. Synthetic resins
  6. Ion-exchange polymer or process of preparing

Charles Stone

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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
Patent

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Composite ion exchange membrane for use in a fuel cell

Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate

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Dispensing fish lure

Fishing – trapping – and vermin destroying – Fishing – Artificial bait
Reexamination Certificate

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Profile ID: LFUS-PAI-P-557230

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