TREA

by knocking on a surface for inputting the code

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Industry

  • CPC
  • G07C2009/00746
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Parent Industries

GPHYSICS G07Checking devices G07CTIME OR ATTENDANCE REGISTERS REGISTERING OR INDICATING THE WORKING OF MACHINES GENERATING RANDOM NUMBERS VOTING OR LOTTERY APPARATUS ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE

Current Industry

G07C2009/00746by knocking on a surface for inputting the code
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