4. Data processing: financial, business practice, management, or co
  5. Automated electrical financial or business practice or...
  6. Electronic shopping

Kazuharu Hasegawa

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Content sales period verifying system and content decryption...

Data processing: financial – business practice – management – or co – Business processing using cryptography – Usage protection of distributed data files
Reexamination Certificate

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Content sales price accounting system and accounting method ther

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Accounting
Patent

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System for and method of distributing proceeds from contents

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Electronic shopping
Patent

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Profile ID: LFUS-PAI-P-1027399

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