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(a) the substitution for “radiated electro-magnetic waves” of “emission, over paths which are not provided by any material substance constructed or arranged for that purpose, of electric, magnetic or electro-magnetic energy” in the definition of “wireless telegraphy”, and
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The expression “wireless telegraphy” means and includes any system of communicating messages, spoken words, music, images, pictures, prints, or other communications, sounds, signs, or signals by means of emission, over paths which are not provided by any material substance constructed or arranged for that purpose, of electric, magnetic or electro-magnetic energy originating in an apparatus or device constructed for the purpose of originating such communications, sounds, signs, or signals.
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