Attachment for weeding tool, and electric weeding tool by using the same
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Power feeding method and device
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Device provided with armature
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Magnetic switch device, door device for pet using same, and method for opening and shutting door device for pet
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Gateway device for pet, opening or closing of door in gateway device for pet, and door opening portion-closing device for attaching gateway device for pet
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Ventilator attached to tool worn on body, and tool worn on body with ventilator
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Hanger
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Shoe insole member having flat valve device and ventilating function and shoe
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Expansion rod device and method for expanding/ contacting expansion body of the same
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Magnetic force switch device, door system for pet using the same and method for opening and closing door system for pet
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Inner bottom member of shoe with ventilator
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Working wear equipped with ventilator
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Valve member and pump device using the same
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Method of discharging excess water in placing cocnrete
