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来源:雅诚德英语网
He filed for the patent in 1992 and it was granted in 1999, making it valid for at least another 15 years.
Abelow在1992年申请了专利,1999年被批准。该专利至少在未来15年都是合法的。
He filed for the patent in 1992 and it was granted in 1999, making it valid for at least another 15 years.
Abelow在1992年申请了专利,1999年被批准。该专利至少在未来15年都是合法的。