Patent search ap:("ERNEST KRAUTH") AND inv:"ERNEST KRAUTH" Page 1

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发明授权
System for propelling and steering vessels 失效
Title translation: 推进和转向船系统

公开(公告)号：US3122121A

公开(公告)日：1964-02-25

申请号：US7619860

申请日：1960-12-16

Applicant: ERNEST KRAUTH

Inventor： ERNEST KRAUTH

IPC: B63G8/08 , B63H11/04 , B63H25/46

CPC classification number: B63G8/16 , B63G8/08 , B63H11/04 , B63H25/46

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