• 专利标题: Combined marine knotmeter, log and depth sounder
  • 申请号: US343007
    申请日: 1982-01-26
  • 公开(公告)号: USD273571S
    公开(公告)日: 1984-04-24
  • 设计人: Ronald R. Overs
  • 申请人: Ronald R. Overs
Combined marine knotmeter, log and depth sounder
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