4. Fire escape, ladder, or scaffold
  5. Wall- or floor-attached
  6. Ladder

Byung-tae Lee

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Folding staircase

Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Patent

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Process of biodegradation of high molecular weight polyethylene

Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Destruction of hazardous or toxic waste
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Profile ID: LFUS-PAI-P-685897

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