| http://www.w3.org/ns/prov#value | - Blackberry Limited04/16/1520150104960Safe outletProvided in a safe outlet further including a rotary type locking body in which the rotary type locking body falls down when a plug is not plugged into the outlet, to thereby make outlet terminals not opened, to thus prevent an electric shock accident in advance, and to thereby entirely block foreign substances such as dust from entering an earth ter
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