valid duration造句怎么写
- 造句
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2、Revising, writing or assisting in writing teaching materials without demanding any financial request during the valid duration of this contract.
1、Please enter a valid duration. Example: For 1 hour 30 minutes enter 0130 or 130
3、If the valid duration of the patent right expires or the patent right is declared invalid, the patentee may not conclude a patent exploitation license contract relating to that patent with others.
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