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US07748294B2 Device for tattooing and method of using the same 失效
纹身装置及其使用方法

Device for tattooing and method of using the same
摘要:
The present invention relates to a tattoo device having a single DC coil with a pulse width modulation (PWM) circuit to control when the single DC coil is energized. Such arrangement eliminates the need for a set screw as in traditional tattoo machines and allows for a lighter device having fewer vibrations, better balance, and improved precision when being used.
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