true……對掙錢的產品申請一些保護性專利很對,以防別人申請了專利來分錢

來源: 晶體管發射極於 2022-02-15 19:34:00 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.