PROBLEM TO BE SOLVED: To make it easy to survey an existent idea and to effectively use a survey result.;SOLUTION: An idea sheet on which a developer proposes an idea is provided with a function ('retrieval condition' field 'existent idea retrieval start' button) for retrieving an existent idea and then the existent idea can be retrieved as well as the proposal of an idea. The retrieval result is managed by a patent server together with the proposed idea.;COPYRIGHT: (C)2001,JPO
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