4. Plastic and nonmetallic article shaping or treating: processes
  5. With severing, removing material from preform mechanically,...
  6. Making hole or aperture in article

Tetsuo Akazawa

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Battery separator and lithium secondary battery

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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Process for producing microporous film having breakage resistanc

Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent

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Profile ID: LFUS-PAI-P-1656322

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