G
PHYSICS
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G07
CHECKING-DEVICES
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G07C
TIME 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
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3/00
Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
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G07C3/146
during manufacturing process
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