Original Assignee Ricoh Co Ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Tatsuya Fujij Current Assignee (The listed assignees may be inaccurate. ![]() Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US11/890,021 Other versions US20070290864A1 Google Patents IC-tag read-write apparatusÄownload PDF Info Publication number US8369781B2 US8369781B2 US11/890,021 US89002107A US8369781B2 US 8369781 B2 US8369781 B2 US 8369781B2 US 89002107 A US89002107 A US 89002107A US 8369781 B2 US8369781 B2 US 8369781B2 Authority US United States Prior art keywords signal circuit tag carrier wave antenna Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US8369781B2 - IC-tag read-write apparatus US8369781B2 - IC-tag read-write apparatus
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