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Patent 2275453: Cover (41Kb) (PDF)
Patent 2275453: Abstract (21Kb) (PDF)
Patent 2275453: Claims (151Kb) (PDF)
Patent 2275453: Background (467Kb) (PDF)
Patent 2275453: Drawings (137Kb) (PDF)
Patent 2275453: Cover Drawing (13Kb) (PDF)
Patent 2275453: Full Patent (824Kb) (PDF)
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