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818823
ABANDONED SECTION 36

on 22 Feb 2000

BALLARD MEMBRANE

BALLARD POWER SYSTEMS INC.

818823 · 24 Jul 1996

007

017

Polymer films, ion-exchange polymer films and gas separation polymer f...

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Ballard power systems inc. (1)

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Class 7 (1)

Class 17 (1)

Correspondents

D. andrew lew (1)

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