| http://www.w3.org/ns/prov#value | - ufficient loudness for being heard by said person outside of and at a distance from said enclosure, said case including within it a battery for powering said time delay means, said oscillator, said frequency control means, said amplifier means, and said transducer means, said case being positionable within said enclosure for permitting light from outside said enclosure to be received by said apert
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