专利名称：Crab line roller 发明人：William C. Lockner,Michael S. Bisking 申请号：US07/796849 申请日：19911125 公开号：US05157858A 公开日：19921027 专利内容由知识产权出版社提供 摘要：A device designed to be removably attached to a boat gunwale which both guides and supports a baited trot lin...