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This invention describes a stationary blade for a hair cutting device, such as a shaver or clipper. It features a unique design where the cutting teeth are double-walled, meaning they have two thin metal layers joined at the tip, with one layer facing the skin. These metal layers are held in place by a plastic support, which also helps form a slot for a moving blade to slide against.
Why it matters: Since 2018, advancements in precision metal forming and plastic molding may have made the complex double-walled blade design more cost-effective to manufacture at scale.
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