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JPH01319285A
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Ignition plug
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US4859900A
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Ignition plug for improving fuel economy of an internal combustion engine and decreasing the amount of toxicants expelled to the environment
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JPS63108690A
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Ignition plug
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JPS62256395A
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Ignition plug
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JPS62157686A
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Ignition plug
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DE3029557A1
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Spark plug for IC engine - has axial hole through centre electrode for introducing air to improve combustion
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JPS575280A
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Ignition plug
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JPS56162485A
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Ignition plug
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JPS54156927A
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Ventilating valve gear of secondary air to internal combustion engine
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JPS5270341A
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Automatic charging device for storage battery
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JPS51141492A
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Device for measuring erythrosedimentation
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IT1030561B
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Moving coil current sensitive meter - has elliptical section core and annular yoke, for checking battery charge
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