4. Synthetic resins or natural rubbers -- part of the class 520 ser
  5. Synthetic resins
  6. Compositions to be polymerized by wave energy wherein said...

Wai Ming Choi

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Gel-forming battery separator

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate

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Graft polymerization, separators, and batteries including...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Reexamination Certificate

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Graft polymerization, separators, and batteries including...

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Reexamination Certificate

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Vapor deposition treated electret filter media

Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2496062

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