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US4993102A Variable-driving unit for wipers and a wiper device incorporating the same 失效
用于擦拭器的可变驱动单元和包括其的擦拭装置

Variable-driving unit for wipers and a wiper device incorporating the
same
摘要:
An automobile wiper device includes a variable-driving unit capable of adjustably changing at least one of the arm pressure and the wiping area of the wiper device.
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