PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • No. 237,702 12 Claims. (Cl. 24-126) This invention relates to a safety locking device and more particularly to a locking device suitable for use by a climber ascending or descending heights to prevent his fall when he loses his footing or grip on the object being climbed including ladders and the like.
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