41.Who invented Revolver View Answer Report DiscussAnswer: COLT Explanation:Currently no explanation available Improve this answer lets discuss in forum
42.Who invented Replacing human heart View Answer Report DiscussAnswer: CHRISTIAN BARNARD Explanation:Currently no explanation available Improve this answer lets discuss in forum
43.Who invented Rare Gas View Answer Report DiscussAnswer: CAVANDISH Explanation:Currently no explanation available Improve this answer lets discuss in forum
44.Who invented Radio transmitter View Answer Report DiscussAnswer: ALEXANDERSON Explanation:Currently no explanation available Improve this answer lets discuss in forum
45.Who invented Railway Engine View Answer Report DiscussAnswer: STEPHENSON Explanation:Currently no explanation available Improve this answer lets discuss in forum
