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

Allen Cohen

Inventor

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Booster system in a cellular phone base station

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate

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Knock-down open riser stairway

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

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Profile ID: LFUS-PAI-P-1459559

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