4. Fire escape, ladder, or scaffold
  5. Combined

Charles E. Hardy

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Infrared photodetector apparatus for measuring projectile...

Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Reexamination Certificate

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Portable tool storage apparatus for use with a ladder

Fire escape – ladder – or scaffold – Combined
Patent

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Profile ID: LFUS-PAI-P-1871583

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