Word: keyless
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Dates: during 1960-1969
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...visitors saw, modern man's ingenuity has lately produced a gun that fires a net to enmesh would-be muggers, skis with wheels for schussing on dry land, a timer that rations children's television viewing, tongs that carry melons without bruising them, and a keyless electronic lock that opens when hidden pressure points are pushed. There is even an ingenious array of glass tubes that waters indoor plants while a householder is away: Such an exhibit would have stirred little interest among major companies a few years ago, but this display attracted representatives of some...