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Title:
【発明の名称】シート状共振回路及び文書類の複写防止及び物品の盗難防止のためにそれを使用する方法
Document Type and Number:
Japanese Patent JP2616920
Kind Code:
B2
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Inventors:
Kubo Keiji
Toshiyuki Osawa
Application Number:
JP11349387A
Publication Date:
June 04, 1997
Filing Date:
May 12, 1987
Export Citation:
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Assignee:
株式会社リコー
International Classes:
G08B13/24; G06K19/07; H05K1/09; H05K1/16; (IPC1-7): G08B13/24; H05K1/16
Domestic Patent References:
JP6261197A
JP6233492A
JP62188782U
Attorney, Agent or Firm:
Hidetake Komatsu (2 outside)



 
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