花费300美元来申请一年的专利备案(Provisionalpatent),美国专利局根本不看。你可以在一年到期前根据产品的情况来决定正式的专利申请。 good luck.
花费300美元来申请一年的专利备案(Provisionalpatent),美国专利局根本不看。你可以在一年到期前根据产品的情况来决定正式的专利申请。 good luck.
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