发明授权
US07817146B2 Sheet, display medium unit, sheet attaching device, and sheet detaching device 有权
片材,显示介质单元,片材附着装置和片材分离装置

Sheet, display medium unit, sheet attaching device, and sheet detaching device
摘要:
The present invention provides a sheet with plural wireless measuring units, each of which, when a radio signal is sent, measures physical quantity surrounding itself by using the radio signal as an energy source, and generates and sends a radio signal having an attribute reflecting the measured physical quantity.
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