fix issue #15, choose first doc number
fix issue #15, choose first doc number

funginstitute/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,yngcan/patentprocessor